Transcript for NASASciFiles - The Case of the Unknown Stink

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HEY, YOU.

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HEY, ME?

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YEAH, YOU.

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COME SEE OUR CLUBHOUSE IN A TREE.

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WE ARE KIDS ON A MISSION TO EDUCATE
OURSELVES BY THE NASA VISION.

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COME EXPLORE MATH AND SCIENCE
'CAUSE THAT'S WHAT MAKES

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OUR ALLIANCE.

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WE ARE THE WHY?

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FILES CLUB.

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WE YEARN TO LEARN AND WANT TO
SEE EVERYTHING THAT WE CAN BE.

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SO COME JOIN US ON OUR JOURNEY.

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DON'T YOU TOUCH THAT DIAL.

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AND WELCOME TO THE NASA WHY?

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FILES.

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WE'RE ALMOST THERE.

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THIS IS REALLY WEIRD.

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I DON'T LIKE THIS.

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WHERE ARE YOU TAKING US?

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YEAH, WHAT ARE YOU UP TO NOW?

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PSST.

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COME HERE.

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A LITTLE CLOSER.

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I'M BIANCA.

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DO YOU LIKE MY TREE HOUSE?

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I BUILT IT WITH MY MOM AND DAD.

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I HOPE MY TWO BEST FRIENDS, MATTHEW
AND JACOB, WILL BE SURPRISED.

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OKAY, YOU CAN TAKE
OFF YOUR BLINDFOLDS.

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WHOA!

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HOW DID YOU DO THIS?

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WHO BUILT THIS?

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I DID, OF COURSE-- WITH
THE HELP OF MY MOM AND DAD.

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YUCK.

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HOW'D A SPIDER GET IN MY CLUBHOUSE?

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DON'T WORRY ABOUT IT.

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GOOD AFTERNOON, THIS IS
KIDS' SCIENCE NEWS NETWORK.

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THIS JUST IN, THE
PUBLIC HEALTH DEPARTMENT

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IN PHEWSVILLE IS ISSUING
A WARNING TODAY.

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SOME RESIDENTS ARE REPORTING
A REALLY BAD STINK IN THE AIR.

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REPORTER I.M. LISSNING IS ON
THE SCENE WITH THIS LIVE REPORT.

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NO ONE KNOWS THE SOURCE
OF THE SMELL.

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WITH ME RIGHT NOW IS RESIDENT,
P.U. WHAT DID YOU NOTICE?

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I JUST SMELLED THIS
REALLY FOUL ODOR.

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AND I DON'T KNOW WHERE
IT'S COMING FROM.

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BUT I REALLY CAN'T TELL,
BECAUSE I SMELL SO BEAUTIFUL!

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BUT YUCK!

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OKAY, THANK YOU, P.U. THAT'S

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ABOUT ALL THE INFORMATION
WE HAVE FROM HERE.

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NOW BACK TO YOU.

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THE PRESENT QUESTIONS INCLUDE;
WHAT'S CAUSING ALL THIS STINK?

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AND HOW IS THIS GOING TO IMPACT US?

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PLEASE CALL US WITHIN THE
WEEK, WE NEED YOUR HELP.

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IF YOU SOLVE THIS PROBLEM,
WE WILL FEATURE YOU

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ON OUR COVER STORY, THIS IS KSNN.

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I'M KIND OF WORRIED
ABOUT THE STINK.

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I HATE BAD SMELLS.

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I KNOW.

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PHEWSVILLE ISN'T TOO FAR AWAY.

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I DON'T WANT TO GET
SICK FROM THE SMELL,

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AND I'M WORRIED ABOUT
MY GRANDMOTHER.

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SHE HAS BREATHING PROBLEMS.

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I HAVE AN IDEA.

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WHAT'S THAT?

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WE COULD HELP KSNN.

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YEAH.

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YEAH, WE COULD HELP
THEM SOLVE THE PROBLEM.

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AND BECOME STARS.

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MAYBE THEY'LL EVEN PUT
OUR PICTURE ON THE NEWS.

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CAN YOU IMAGINE BEING
ON THE LOCAL NEWS?

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THERE'S MORE TO THIS
THAN BECOMING A STAR.

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WE COULD ACTUALLY
SOLVE THE PROBLEM.

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WELL, THAT TOO.

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OKAY.

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WHERE DO WE START?

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LET'S FIGURE OUT WHAT
THE PROBLEM REALLY IS.

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HMM.

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OKAY.

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WHAT DO WE KNOW SO FAR?

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WELL, WE KNOW THAT SOMETHING
REALLY REALLY STINKS.

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HOLD ON.

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LET'S WRITE THIS DOWN.

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OK, WE KNOW THE PHEWSVILLE PULBLIC
HEALTH DEPARTMENT GAVE A WARNING,

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AND SOME PEOPLE IN PHEWSVILLE
SMELL SOMETHING REALLY BAD,

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AND NO-ONE KNOWS WHERE
THE SMELL IS COMING FROM.

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I KNOW THAT WE'LL BE FAMOUS
IF WE FIGURE THIS PROBLEM OUT.

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BUT WE ONLY HAVE A WEEK.

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GOOD POINT.

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SO IT COMES DOWN TO:
WHAT'S THE SMELL?

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OKAY, ON THE BOARD,
WE HAVE THREE COLUMNS.

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AT FIRST OF THESE WE
HAVE WHAT WE KNOW.

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AND THEN WE HAVE WHAT WE NEED
TO KNOW, AND WHERE WE NEED TO GO

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TO GET THE INFORMATION.

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BUT WE REALLY NEED TO KNOW
A LOT MORE THAN WE DO NOW.

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LIKE WHAT?

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LIKE WHAT'S IN A SMELL?

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ARE ALL SMELLS BAD FOR YOU?

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I KNOW A SKUNK STINKS,
BUT SMELL CAN'T KILL YOU.

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GOOD POINT.

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AND YOUR SHOES SMELL,
BUT I GUESS WE'LL LIVE.

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AND MY DOG'S BREATH IS REALLY BAD.

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OKAY, GUYS, GET SERIOUS ABOUT THIS.

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WE NEED TO KNOW HOW A SMELL MOVES.

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WHY?

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IF WE'RE GOING TO
SOLVE THE PROBLEM,

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WE NEED TO KNOW HOW THE SMELL
GOT THERE IN THE FIRST PLACE.

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LET'S EXPERIMENT.

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OKAY, IF WE'RE GOING
TO DO EXPERIMENTS,

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WE NEED TO KNOW HOW
WE CAN DO EXPERIMENTS

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TO HELP US SOLVE THE PROBLEM.

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WHERE'S IS PHEWSVILLE FROM HERE?

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IT'S THAT WAY!

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I THINK WE NEED A MAP OF THE AREA.

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I'VE GOT ONE AT HOME.

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I'LL BRING IT TOMORROW.

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LET'S GO TALK TO OUR NEIGHBOR,

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DR. D. HE'S A RETIRED
SCIENCE PROFESSOR.

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HE'S IN HIS YARD.

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HELLO, UP THERE.

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WHAT ARE ALL OF YOU UP TO?

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WE'RE TRYING TO FIND ANSWERS
TO SOME REALLY BIG QUESTIONS.

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HEY, THAT'S WHAT I DID AT WORK.

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SO HOW DO YOU FIND ANSWERS?

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I LIKE TO USE THREE BASIC
RESOURCES: BOOKS, THE INTERNET

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AND EXPERTS I CAN FIND TO HELP.

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GOTCHA, DR. D. THANKS,
DR. D. GOOD-BYE.

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LET'S PUT A SEARCH UNDER SMELL.

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S-M-E-L-L.

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THIS IS FUN, DO YOU USE THE
INTERNET FOR YOUR HOMEWORK?

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LET'S SEE WHAT IT SAYS ON SMELL.

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LISTEN TO THIS, WE HAVE THE BEST
SENSE OF SMELL AT THE AGE OF TEN.

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HEY, THAT'S US.

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LET'S CLICK HERE.

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OH, THAT'S THE FUN FACT FILE.

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SNAKES SMELL WITH THEIR TONGUES.

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THEIR TONGUE DETECTS DANGER.

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SHARKS ARE CALLED HOUNDS OF THE SEA
BECAUSE THEY CAN FIND JUST ONE SPOT

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OF BLOOD FROM OVER ONE MILE AWAY.

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WE NEED TO FIND OUT
WHAT'S CAUSING THE STINK.

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THAT'S IF WE WANT TO GET ON KSNN.

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I'LL SHOW THEM.

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WE'LL ALL BE STARS ON KSNN.

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LET'S JUST GO CHECK IN
WITH DR. D. HEY, DR. D.,

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WHAT ARE YOU WORKING ON?

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JUST ONE OF MY REGULAR PROJECTS.

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WOW, THAT'S NEAT, CAN
WE TAKE A RIDE ON IT?

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I DON'T THINK WE'RE
QUITE READY FOR THAT.

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HI, GERONIMO.

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ARE YOU GETTING ALONG
WITH BERNIE TODAY?

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GERONIMO WANTS TO HELP.

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DID YOU INVESTIGATE THE PROBLEM?

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WHAT DID YOU FIND OUT?

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A LOT.

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WE FOUND OUT YOU DEVELOP YOUR
BEST SENSE OF SMELL AT AGE TEN.

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YES.

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WE GATHERED A LOT OF INFORMATION.

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BUT WE'RE NOT SURE
WHERE IT'S GOING YET.

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DR. D, DID YOU SEE THE
KSNN STORY ON STINK?

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DR. D, WHAT MAKES THINGS STINK?

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HOLD ON, GUYS.

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I DON'T HAVE ALL THE ANSWERS, BUT
I MIGHT BE ABLE TO GET YOU STARTED

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IN THE RIGHT DIRECTION.

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FIRST OF ALL, NOT EVERYONE
THINKS THE SAME THINGS STINK.

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WELL, I AGREE WE ALL THINK
A PIG FARM REALLY STINKS.

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I THINK YOU MAY WANT TO
USE THE SCIENTIFIC METHOD

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TO HELP FIGURE THIS OUT.

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SCIENCE?

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LIKE WHAT WE STUDIED IN SCHOOL?

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YES, THE SCIENTIFIC METHOD IS A
STEP-BY-STEP WAY TO SOLVE PROBLEMS.

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ACTUALLY, WE USE IT EVERY DAY.

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LOOK AT THIS CHART.

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WE USUALLY START WITH A PROBLEM.

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THEN WE ASK A LOT OF QUESTIONS,
GATHER A LOT OF INFORMATION,

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THEN FORM A HYPOTHESIS.

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WE TEST THAT HYPOTHESIS
BY COLLECTING DATA.

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IF THE DATA DOESN'T SUPPORT
THE HYPOTHESIS, WE TRY AGAIN.

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LISTEN CAREFULLY, AND
YOU TOO WILL LEARN ALL

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ABOUT THE SCIENTIFIC METHOD.

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I'LL LET YOU IN ON SOMETHING,

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IF THIS GROUP USES
THE SCIENTIFIC METHOD,

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THERE'S A GOOD CHANCE THEY'LL
FIGURE OUT THE PROBLEM.

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MY MOM WORKS AT NASA, AND SHE
SAYS THE SCIENTISTS THERE USE

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THE SCIENTIFIC METHOD.

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AREN'T SCIENTISTS KIND OF WEIRD?

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LIKE THE WEIRD ONES YOU SEE
ON SATURDAY MORNING CARTOONS.

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HEY, WATCH IT.

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MY MOM'S A SCIENTIST, AND LET ME
TELL YOU, SHE'S NOT AT ALL WEIRD.

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YES, YOU'RE RIGHT.

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SCIENTISTS COME FROM
FAMILIES LIKE YOURS.

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MY MOM DOESN'T WALK THE HALLS
WEARING A STRANGE WHITE COAT.

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SCIENTISTS MUST BE CURIOUS.

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DO THEY ASK A LOT OF QUESTIONS?

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I WOULD MAKE A GOOD SCIENTIST
BECAUSE I ALWAYS ASK WHY.

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WHEN YOU SEE SOMETHING WEIRD,
YOUR FIRST QYESTION IS, "HEY,

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WHY IS THIS GOING ON?"

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A BIG PART OF SCIENCE IS
OBSERVING AND QUESTIONING.

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YOU MEAN OBSERVING WITH YOUR EYES?

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LET ME SHOW YOU WHY IT'S VERY
IMPORTANT TO OBSERVE CAREFULLY.

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FIRST, I'LL DROP THE BASKETBALL.

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NOW THE SOFTBALL.

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NOW WATCH CAREFULLY WHEN
I DROP THEM BOTH TOGETHER.

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WHOA!

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TELL ME-- HOW HIGH DID
THIS BASKETBALL BOUNCE?

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I DIDN'T NOTICE.

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NEITHER DID I.

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THE FLYING SOFTBALL WAS A
REAL DISTRACTION, WASN'T IT?

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LET'S TRY IT ONCE MORE.

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OH.

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IT HARDLY EVEN BOUNCED.

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I GUESS IT'S EASY TO
MISS SOMETHING EVEN

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WHEN YOU'RE TRYING TO OBSERVE IT.

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SCIENTISTS OBSERVE
WITH ALL THEIR SENSES.

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THEY ALSO USE TOOLS LIKE
TELESCOPES AND MICROSCOPES

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TO HELP THEM MAKE OBSERVATIONS.

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WHAT KIND OF TOOLS COULD WE
USE TO HELP US WITH THE SMELLS?

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I HOPE THEY'RE NOT EXPENSIVE.

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I ALREADY SPENT THIS
WEEK'S ALLOWANCE.

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ALL GOOD SCIENTISTS WRITE
DOWN THEIR INFORMATION,

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MAKE SURE YOU KEEP GOOD
NOTES OF WHAT YOU FIND OUT.

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GOOD THING WE MADE UP THAT BOARD.

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THIS IS A MUST, EVEN IF
YOU DON'T LIKE TO WRITE.

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WE ALREADY STARTED TAKING NOTES.

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YOU MR, NEED TO GET
A BETTER NOTEBOOK.

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I THINK YOU'RE READY TO TAKE THE
NEXT STEP INTO THE WORLD OF STINK.

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I'M READY.

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IF YOU PLAN ON DOING EXPERIMENTS,
YOU REALLY NEED TO VISIT

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WITH SOMEONE GREAT AT
DESIGNING AND DOING EXPERIMENTS.

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HER NAME IS MONICA BARNES.

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SHE WORKS AT NASA AND GUESS WHAT?

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SHE'S EXPECTING YOU.

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I FIGURED YOU'D WANT TO USE
HER AS A RESOURCE PERSON.

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SEE YOU LATER, DR. D. BYE.

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OH, I WISH THEM GOOD LUCK.

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HI, MISS BARNES.

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HI.

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HI.

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I'M BIANCA AND THIS
IS JACOB AND MATTHEW.

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DR. D TOLD US WE NEEDED TO LEARN
MORE ABOUT THE SCIENTIFIC METHOD.

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IT MIGHT HELP US SOLVE THE
PROBLEM OF STINK IN PHEWSVILLE.

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WE WERE HOPING YOU COULD HELP US.

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WOW.

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LOOK AT THIS PLACE.

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HEY, THIS DOESN'T LOOK LIKE A LAB.

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THIS LOOKS LIKE A PLANE.

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ARE YOU A SCIENTIST?

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WELL, NOT EXACTLY.

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LET ME ASK YOU SOMETHING.

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HAVE YOU EVER HEARD OF AN ENGINEER?

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AN ENGINEER?

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ISN'T THAT SOMEONE
THAT DRIVES A TRAIN,

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DESIGNS, OR INVENTS SOMETHING?

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THAT'S CORRECT ON ALL ACCOUNTS.

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I'M AN ELECTRONICS ENGINEER, AND WE
USE MATH, SCIENCE, AND PRINCIPLES

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OF ELECTRONICS IN ORDER TO HELP
US WITH OUR FLYING LABORATORY.

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A FLYING LABORATORY?

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WHAT DO YOU MEAN BY THAT?

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COME ON, KIDS.

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LET ME SHOW YOU HOW IT WORKS.

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OUR PLANE IS MORE
LIKE A COMPUTER LAB,

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WITH LOTS OF ELECTRONIC
EQUIPMENT AND AIRCRAFT SYSTEMS.

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IN HERE, WE EVEN HAVE A REAL
COCKPIT, JUST LIKE NORMAL PLANES.

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I'D LIKE TO BE A PILOT ONE DAY.

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AND I'M SURE YOU WILL.

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YOU'LL MAYBE EVEN FLY THIS PLANE.

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COOL.

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WE HAVE SEVERAL EXPERIMENTAL
STATIONS IN OUR PLANE

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WHICH ARE ALL TIED
TOGETHER IN A NETWORK.

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THEY WORK TOGETHER TO HELP US
COLLECT DATA WHILE WE'RE FLYING

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AND LANDING.

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THE TYPE OF DATA WE
COLLECT DEPENDS ON THE TYPE

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OF RESEARCH WE'RE CONDUCTING.

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GET IT?

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YES, BUT HOW DO YOU USE THE
SCIENTIFIC METHOD ON YOUR JOB?

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THE FIRST THING WE DO USING
THE SCIENTIFIC METHOD IS

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TO IDENTIFY A PROBLEM, RIGHT?

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RIGHT.

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WELL, THE SECOND THING WE DO IN
USING THE SCIENTIFIC METHOD IS

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TO COLLECT DATA RELATED
TO THE PROBLEM

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BY CHANGING CERTAIN VARIABLES.

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WHAT ARE VARIABLES?

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VARIABLES ARE JUST CHANGES.

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WE CHANGE ONE OR MORE
THINGS, ONE AT A TIME,

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AND THEN WE MEASURE THE
RESULTS OF THAT CHANGE.

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HOW DO YOU DO THAT?

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DURING THE WINTER SEASON, WE
ARE GOING TO TAKE THE AIRPLANE

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TO A VERY COLD PLACE, LIKE UP
IN MICHIGAN NEAR THE GREAT LAKES

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AND LAND IT ON A VERY LONG RUNWAY.

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THEN WE'LL TEST THE PLANE
BY LANDING IT ON A RUNWAY

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TO SEE HOW LONG IT TAKES
ONCE THE BRAKES ARE APPLIED,

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TO STOP THE PLANE.

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THIS TELLS US HOW MUCH FRICTION
THAT WE HAVE ON THE TIRES.

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IT'S JUST LIKE TAKING YOUR
BICYCLE AND TRYING TO STOP ON ICE

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OR SNOW INSTEAD OF ON
A DRY, SMOOTH ROAD.

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SO WE'LL TEST AT LEAST FOUR
VARIABLES IN OUR EXPERIMENT:

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A DRY SURFACE, WET SURFACE, ICY
SURFACE, AND A SNOWY SURFACE.

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LET ME SHOW YOU HOW WE CAN
LOOK AT SOME OF OUR DATA.

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WE CAN OBSERVE ALL OF THE DIFFERENT
CAMERA VIEWS AT THE VIDEO STATION.

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THESE COMPUTER-GENERATED GRAPHICS
DISPLAYS HELP US SEE HOW THE

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AIRPLANE IS TRAVELLING
DOWN THE RUNWAY.

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WOW.

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COOL PICTURES.

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IT CAN HANDLE MILLIONS OF
BYTES OF DATA ALL AT ONCE.

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THIS REPRESENTS THE DATA-COLLECTION
PART OF THE SCIENTIFIC METHOD

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AND THE RESULTS COME OUT
IN A PATTERN OF NUMBERS

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THAT THE RESEARCHERS CAN USE
TO TELL HOW THE TIRES REACTED

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WITH THE RUNWAY SURFACE.

[00:13:17.589]
AWESOME.

[00:13:18.469]
WHAT'LL WE DO NEXT?

[00:13:19.789]
NEXT, WE TAKE THE DATA THAT WE
COLLECTED, AND WE ANALYZE IT

[00:13:23.109]
IN ORDER TO HELP US SOLVE
OUR RUNWAY FRICTION PROBLEM.

[00:13:26.919]
WE CAN USE WHAT WE FIND
FROM ANALYZING THE DATA

[00:13:30.049]
TO MAKE BETTER RUNWAYS AND
LANDING GEAR TO HELP OUR PLANES

[00:13:33.239]
TO LAND MORE SAFELY DURING
BAD OR INCLEMENT WEATHER.

[00:13:36.669]
THIS IS THE WAY WE
HELP MAKE OUR AIRPLANES

[00:13:39.289]
AND AIRPORTS SAFER FOR YOU AND ME.

[00:13:43.899]
SO THIS IS HOW WE USE
THE SCIENTIFIC METHOD

[00:13:46.089]
ON OUR BOEING 757 RESEARCH
LABORATORY OUT HERE

[00:13:50.139]
AT THE NASA LANGLEY
RESEARCH CENTER.

[00:13:51.559]
NOW THAT WE'VE SHOWN YOU HOW
TO FIRST IDENTIFY A PROBLEM,

[00:13:55.049]
NEXT TO COLLECT THE DATA BY
CHANGING CERTAIN VARIABLES,

[00:13:58.839]
MAYBE YOU CAN USE
THIS METHOD IN ORDER

[00:14:01.019]
TO SOLVE YOUR PROBLEM
WITH THE STINK.

[00:14:03.719]
YES, I THINK WE SHOULD
THINK ABOUT OUR VARIABLES

[00:14:06.039]
FOR THE INVESTIGATION OF STINK.

[00:14:08.389]
THE STINK.

[00:14:09.079]
AND VARIABLES.

[00:14:11.979]
IT'S GETTING LATE.

[00:14:12.959]
WE BETTER GO OVER
WHAT WE ALREADY KNOW.

[00:14:15.299]
HUH?

[00:14:17.049]
WE NEED TO FIND OUT WHAT VARIABLES
MAY BE PART OF THIS PROBLEM.

[00:14:20.809]
WE GOT AN E-MAIL.

[00:14:22.269]
DR. D. WANTS US TO GO TO
THE SANITATION DEPARTMENT.

[00:14:25.039]
UGH.

[00:14:25.439]
ISN'T THAT WHERE ALL
THAT STUFF GOES?

[00:14:28.289]
WHY WOULD HE WANT US TO GO THERE?

[00:14:30.229]
TO TORTURE US?

[00:14:31.439]
NO.

[00:14:31.899]
THAT'S WHERE HE SAID THE
EXPERTS TRACK A STINK.

[00:14:36.149]
OKAY, THIS GOES ON THE
BOARD UNDER "WHERE TO GO."

[00:14:38.509]
LET'S GO THERE AND
SEE WHAT WE CAN FIND.

[00:14:42.279]
AND THEN WE'LL CALL DR. D AND
UPDATE HIM ON OUR FINDINGS.

[00:14:46.139]
I CAN'T BELIEVE I'M
WASTING MY TIME ON THIS.

[00:14:48.669]
WE'LL NEVER SOLVE THIS PROBLEM.

[00:14:50.679]
WATCH.

[00:14:51.059]
WE'LL PROVE HIM WRONG.

[00:14:52.909]
SO WHAT'S UP?

[00:14:53.499]
WILL OUR TREE HOUSE DETECTIVES
BE ABLE TO SOLVE THIS PROBLEM?

[00:14:55.919]
WILL THEY BE ABLE TO
CLEARLY DEFINE THE PROBLEM?

[00:14:58.269]
AND, WHAT HELP CAN YOU GIVE?

[00:14:59.819]
TUNE IN NEXT TIME FOR,
SEARCH FOR THE STINK.

[00:15:08.819]
[00:15:09.599]
I'LL SNEAK THROUGH THE SECRET DOOR.

[00:15:11.129]
SHE WON'T EVEN KNOW I'M HERE.

[00:15:12.919]
BIANCA, WHERE ARE YOU?

[00:15:13.909]
HERE I AM.

[00:15:14.379]
WHERE?

[00:15:14.799]
OVER HERE.

[00:15:16.049]
COOL.

[00:15:16.639]
CAN I TAKE A RIDE?

[00:15:18.259]
SURE.

[00:15:19.019]
HEY, I'VE GOT THE MAP.

[00:15:22.019]
COME ON DOWN.

[00:15:25.259]
LET'S GET STARTED ON
SOLVING THE STINK PROBLEM.

[00:15:32.079]
LOOK, THERE'S WHERE
WE ARE, BIG CITY.

[00:15:34.499]
OKAY, WHERE'S PHEWSVILLE?

[00:15:35.869]
HEY, HERE'S EXVILLE.

[00:15:37.339]
LOOK.

[00:15:37.789]
THERE'S MID CITY.

[00:15:39.469]
THAT'S PRETTY CLOSE TO US.

[00:15:43.109]
OH, HERE'S PHEWSVILLE.

[00:15:45.009]
THAT'S PRETTY FAR AWAY.

[00:15:46.259]
WHEW.

[00:15:47.229]
MAYBE THE SMELL WON'T REACH US.

[00:15:50.059]
WHAT DO WE NEED TO DO
TO SOLVE THIS PROBLEM?

[00:15:52.159]
WELL, LET'S GO TO THE BOARD.

[00:15:53.439]
YESTERDAY, MONICA BARNES
AND DR. D SHOWED US STUFF

[00:16:00.409]
ABOUT DOING EXPERIMENTS.

[00:16:03.589]
YEAH, AND USING THE SCIENTIFIC
METHOD AND LEARNING MORE

[00:16:08.139]
ABOUT VARIABLES AND
THEIR IMPORTANCE

[00:16:09.779]
IN INVESTIGATING A PROBLEM.

[00:16:11.439]
SO WHAT NOW?

[00:16:12.199]
I THINK BEFORE WE MOVE ON
ANY FURTHER, WE STILL NEED

[00:16:16.129]
TO LEARN MORE ABOUT
THE SCIENTIFIC METHOD.

[00:16:18.479]
DR. D SAYS IT WILL
DEFINITELY HELP US.

[00:16:21.439]
THE STINK EXPERTS MAY BE ABLE
TO HELP US THERE, COME ON,.

[00:16:24.669]
LET'S HEAD OVER TO THE
SANITATION DEPARTMENT.

[00:16:26.599]
OKAY.

[00:16:27.019]
COME ON, LET'S GO.

[00:16:28.979]
A BUS SHOULD BE HERE ANY MINUTE.

[00:16:30.929]
THIS WILL BE AN INTERESTING
SMELL JOURNEY.

[00:16:33.339]
ITS ALL PART OF BEING A SCIENTIST.

[00:16:35.179]
SO LET'S GET UP AND GO.

[00:16:36.559]
OKAY, WE'RE HERE.

[00:16:37.309]
BUT NOW WHERE DO WE GO?

[00:16:40.029]
WOW.

[00:16:40.089]
LOOK HOW BIG THIS PLACE IS.

[00:16:41.639]
IT'S PRETTY NEAT.

[00:16:45.579]
LOOK, THERE'S SOMEONE
STRAIGHT AHEAD.

[00:16:49.619]
SHE MUST BE THE SMELL EXPERT.

[00:16:54.219]
WE'RE MEETING A SCIENTIST
NAMED PAULA HOGG.

[00:16:59.059]
HI, GUYS.

[00:16:59.729]
DR. D SAID YOU WOULD
BE ON YOUR WAY.

[00:17:03.519]
HI, I'M BIANCA.

[00:17:05.209]
THIS IS MATTHEW AND JACOB.

[00:17:07.109]
I'M PAULA.

[00:17:07.719]
HOW CAN I HELP YOU?

[00:17:09.009]
WE WANT TO GET OUR FACES ON KSNN.

[00:17:10.629]
WHAT HE MEANS, IS HE WANTS TO HELP
KSNN FIND THE SOURCE OF THE SMELL.

[00:17:17.419]
OH, WELL I CAN SHOW YOU WHERE THE
SOURCE OF THE ODOR STARTS HERE.

[00:17:20.689]
BUT FIRST YOU'RE GONNA
NEED SOME OF THESE.

[00:17:23.019]
DO YOU USE THE SCIENTIFIC METHOD?

[00:17:26.159]
YES, WE DO.

[00:17:26.669]
THE FIRST STEP IS TO FIND
AND OBSERVE THE PROBLEM.

[00:17:29.959]
THIS IS WHERE THE WASTE WATER COMES
INTO THE PLANT FROM OUR HOMES.

[00:17:33.379]
THE WASTE WATER CONTAINS ODOROUS
SUBSTANCES LIKE HYDROGEN SULFIDE

[00:17:36.789]
AND AMMONIA.

[00:17:38.229]
HYDROGEN SULFIDE IS SOMETIMES
CALLED THE ROTTEN EGG GAS.

[00:17:42.309]
SOME OF THESE SUBSTANCES ARE FORMED
IN THE SEWER WHEN BACTERIA BREAK

[00:17:46.609]
DOWN ORGANIC MATERIAL
IN THE WASTE WATER.

[00:17:52.099]
MAN, THIS IS DEFINITELY WHERE
THE SMELL IS COMING FROM.

[00:17:56.359]
YES, AND YOU'RE USING YOUR SENSE
OF SMELL TO OBSERVE THE PROBLEM.

[00:17:59.849]
THE NEXT STEP IS TO COLLECT DATA.

[00:18:03.069]
HEY NEET, WHAT IS THAT?

[00:18:04.999]
IT'S A HYDROGEN SULFIDE METER.

[00:18:07.179]
WHAT DOES IT SHOW US?

[00:18:07.869]
WITH THIS, WE CAN MEASURE EXACTLY
HOW MUCH HYDROGEN SULFIDE GAS IS

[00:18:12.109]
IN THE AIR.

[00:18:13.129]
AND NEXT, WE NEED TO COME
UP WITH A HYPOTHESIS.

[00:18:15.249]
DO YOU KNOW WHAT A HYPOTHESIS IS?

[00:18:17.099]
I DO.

[00:18:18.209]
IT'S A GUESS.

[00:18:19.169]
WELL, IT'S AN EDUCATED GUESS.

[00:18:20.749]
IT'S WHEN WE USE OUR FACTS,
OBSERVATIONS, AND DATA TO COME

[00:18:24.979]
UP WITH A POSSIBLE
ANSWER TO THE PROBLEM.

[00:18:27.799]
IS THIS WHERE YOU
GET RID OF THE ODOR?

[00:18:29.779]
YES, IT IS.

[00:18:31.029]
WE KNOW THAT THE ODOR IS
MAINLY CAUSED BY THE RELEASE

[00:18:34.029]
OF HYDROGEN SULFIDE GAS,
WHICH CAN BE CONTROLLED

[00:18:36.709]
BY CHEMICAL PROCESSES
SUCH AS THESE.

[00:18:39.329]
WHAT'S THAT?

[00:18:41.589]
THESE ARE SCRUBBERS.

[00:18:42.909]
LOOK THROUGH THE WINDOW AND
OBSERVE THE ODOR-REMOVAL PROCESS.

[00:18:46.099]
THESE WET SCRUBBERS CHANGE THE
GAS AND TURN IT INTO LIQUID,

[00:18:49.929]
WHICH REMOVES THE ODOR.

[00:18:51.029]
AND WE USED ALL OF OUR
DATA AND OBSERVATION

[00:18:54.079]
TO MAKE SURE THIS SYSTEM WORKS.

[00:18:56.939]
[00:19:00.059]
HOW DO YOU KNOW IF YOUR
HYPOTHESIS IS WORKING?

[00:19:03.129]
WE TEST OUR HYPOTHESIS EVERY
DAY AT THE TREATMENT PLANT.

[00:19:06.859]
WE USE OUR NOSES AGAIN?

[00:19:08.039]
YES, OUR SENSE OF SMELL CAN TELL
US IF THE ODOR IS BEING CONTROLLED.

[00:19:14.359]
BUT WE ALSO USE A METER.

[00:19:16.459]
PLANT OPERATORS CHECK THE SULFIDE
LEVELS GOING INTO AND COMING

[00:19:20.449]
OUT OF THE SCRUBBING SYSTEM
AT LEAST A DOZEN TIMES A DAY.

[00:19:24.059]
BASED ON THIS, WE
CAN MAKE ADJUSTMENTS

[00:19:26.179]
TO THE ODOR-CONTROL PROCESS.

[00:19:28.479]
[00:19:30.279]
THE SMELL IS MUCH BETTER.

[00:19:34.009]
DOES THIS REMOVE ALL THE ODOR?

[00:19:35.859]
WELL, UNDER THE RIGHT CONDITIONS,

[00:19:39.409]
ALMOST ALL OF THE ODOR
CAN BE TAKEN AWAY.

[00:19:43.839]
WOW.

[00:19:44.139]
LOOK AT THIS PLACE.

[00:19:45.989]
SOMETHING SURE IS HAPPENING HERE.

[00:19:49.349]
IT LOOKS LIKE MY BUBBLE BATH--

[00:19:50.549]
THAT'S AFTER I'VE
BEEN PLAYING ALL DAY.

[00:19:53.499]
THIS IS THE AERATION BASIN.

[00:19:55.639]
LOOK CLOSELY.

[00:19:57.349]
A LOT OF CHANGE IS HAPPENING HERE.

[00:19:59.489]
BACTERIA ARE WORKING TO REMOVE
ODOR AND OTHER POLLUTANTS.

[00:20:03.519]
AFTER ALL THIS, I'M SURE THE
WATER MUST BE REALLY CLEAN.

[00:20:07.509]
AND THE ODOR HAS TO BE GONE.

[00:20:10.359]
WELL, THAT'S THE GOAL.

[00:20:12.039]
BUT IF THERE'S STILL
AN ODOR, WE CAN GO BACK

[00:20:14.359]
TO THE SCIENTIFIC METHOD
TO SOLVE OUR PROBLEM.

[00:20:17.329]
THE SCIENTIFIC METHOD.

[00:20:20.079]
BUT HOW DO YOU KNOW THAT
THE ODOR IS GONE FOR GOOD?

[00:20:23.719]
WELL, AT THE END OF THE TREATMENT
PROCESS, WE TEST TO MAKE SURE

[00:20:27.079]
THAT THE ODOR AND OTHER
POLLUTANTS ARE GONE.

[00:20:29.769]
THIS PLACE IS REALLY COOL.

[00:20:33.869]
WOW.

[00:20:33.949]
IT LOOKS SO CLEAN.

[00:20:35.369]
WOW.

[00:20:35.589]
HAVE YOU LEARNED ENOUGH ABOUT
THE SCIENTIFIC METHOD TO HELP YOU

[00:20:40.839]
WITH YOUR SMELL PROBLEM?

[00:20:42.439]
YES.

[00:20:42.549]
I THINK WE ALL SHOULD
THINK ABOUT A HYPOTHESIS.

[00:20:45.969]
YES, A HYPOTHESIS AND VARIABLES.

[00:20:48.419]
HI, DR. D.

[00:20:52.289]
OH, IT'S THE INVESTIGATIVE
SMELL TEAM.

[00:20:53.829]
HOW YOU DOING?

[00:20:54.759]
WE VISITED THE SMELL EXPERTS AT
THE WASTE WATER TREATMENT PLANT.

[00:20:58.719]
AND A SCIENTIST NAMED PAULA
HOGG SHOWED US HOW SHE USES THE

[00:21:02.529]
SCIENTIFIC METHOD ON HER JOB
TO TRACK STINK AT THE PLANT.

[00:21:06.689]
SO TELL ME-- DID YOU LEARN
ANY MORE ABOUT SCIENCE?

[00:21:08.659]
WE LEARNED WHY SCIENTISTS
ASK SO MANY QUESTIONS.

[00:21:13.079]
IT'S BECAUSE THEY'RE CURIOUS.

[00:21:15.279]
WHY DON'T YOU TRY ONE OF
THESE INFORMATION SHEETS.

[00:21:17.439]
I ALWAYS USE THEM
TO KEEP ME STRAIGHT

[00:21:18.779]
WHEN I'M RESEARCHING PROBLEMS.

[00:21:20.079]
HMMMM, IDENTIFY A VARIETY OF
POTENTIAL SOURCES OF INFORMATION.

[00:21:26.399]
[00:21:27.999]
IDENTIFY IN-ACCURATE AND
MISLEADING INFORMATION,

[00:21:31.399]
SELECTS INFORMATION APPROPRIATE TO
THE PROBLEM OR QUESTION AT HAND.

[00:21:36.009]
THIS LOOKS LIKE IT'LL BE HELPFUL.

[00:21:37.349]
THANKS, DR. D. HEY, IT'S
AN UPDATE FROM KSNN.

[00:21:44.559]
WE HAVE CREWS ON THE
SCENE IN PHEWSVILLE.

[00:21:46.119]
ON THIS TUESDAY AFTERNOON,
THE STINK APPEARS TO BE GONE,

[00:21:49.349]
AND NO ONE HAS REPORTED
GETTING SICK FROM IT.

[00:21:51.969]
WE JUST RECEIVED WORD THAT A GROUP
OF YOUNG DETECTIVES ARE TRYING

[00:21:54.869]
TO SOLVE THIS MYSTERY.

[00:21:55.809]
IF YOU WANT TO HELP THEM,
CHECK OUT OUR WEBSITE.

[00:21:58.529]
THIS IS KSNN.

[00:21:59.399]
HEY, DR. D MUST HAVE
CALLED THE NEWS STATION.

[00:22:04.639]
I THINK THEY'RE TALKING ABOUT US.

[00:22:06.579]
THIS IS REALLY COOL.

[00:22:08.019]
THINK HOW MANY PEOPLE
WILL KNOW ABOUT US.

[00:22:10.629]
I'M GLAD THE SMELL'S
GONE AND NOBODY GOT SICK.

[00:22:13.679]
BUT WHAT IF THE SMELL COMES BACK?

[00:22:17.319]
COMES BACK?

[00:22:18.259]
OH NO.

[00:22:19.329]
WE HAVE TO GET THIS
FIGURED OUT NOW.

[00:22:21.189]
I AGREE.

[00:22:21.939]
WE NEED HELP.

[00:22:22.949]
I HAVE AN IDEA.

[00:22:24.889]
WE CAN ASK OUR FRIENDS
AT SCHOOL TO HELP US.

[00:22:26.839]
YEAH, BUT WE STILL NEED TO TAKE
A GUESS AS TO WHAT'S CAUSING IT.

[00:22:32.099]
I THINK THAT'S CALLED
A HYPO-THESIS.

[00:22:35.849]
NO, YOU MEAN A HYPOTHESIS.

[00:22:38.069]
HERE.

[00:22:38.159]
LET ME PUT IT ON THE BOARD.

[00:22:40.449]
WHATEVER.

[00:22:41.389]
AND THEN WE NEED TO-- HOLD ON.

[00:22:44.559]
LOOK AT THIS.

[00:22:46.659]
IT'S A MAP.

[00:22:48.669]
NO.

[00:22:49.329]
THE SMALL PRINT.

[00:22:50.779]
OH, WHY DIDN'T I THINK OF THIS?

[00:22:51.909]
IT SAYS "CHEMICAL PLANT" THAT'S IT.

[00:22:54.099]
IT'S KIND OF NEAR PHEWSVILLE.

[00:22:56.449]
I GET IT NOW.

[00:22:57.039]
IT'S ALL COMING BACK TO ME.

[00:23:01.309]
THIS IS GREAT.

[00:23:02.319]
WE ARE DEFINITELY GOING
TO BE ON KSNN NOW.

[00:23:04.799]
THE CHEMICAL PLANT IS DEFINITELY
WHERE THE SMELL'S COMING FROM.

[00:23:08.569]
I THINK WE HAVE A HYPOTHESIS.

[00:23:10.429]
I HOPE WE'RE RIGHT.

[00:23:11.509]
BUT, YEAH.

[00:23:12.139]
THIS ALL JUST SEEMS A
LITTLE TOO EASY TO ME.

[00:23:17.269]
MAYBE WE'RE JUST GOOD
AT THIS DETECTIVE GAME.

[00:23:20.629]
MAYBE.

[00:23:21.849]
YOU NEVER KNOW.

[00:23:23.269]
LOOK AT ALL THE E-MAIL
WE'VE RECEIVED.

[00:23:28.049]
THERE MUST BE A MILLION.

[00:23:29.649]
OR CLOSE TO IT.

[00:23:30.959]
HEY, SCHOOL STARTS PRETTY SOON.

[00:23:33.289]
MAYBE WE SHOULD DOWNLOAD ALL OF
THIS AND TAKE IT TO SCHOOL WITH US.

[00:23:37.199]
AND MAYBE WE COULD GET OUR
FRIENDS TO HELP US SORT IT OUT.

[00:23:39.399]
YEAH.

[00:23:39.609]
GOT IT.

[00:23:41.059]
LET'S GO.

[00:23:41.989]
OKAY.

[00:23:42.679]
HEY, I'LL GRAB THE MAP.

[00:23:45.709]
COOL.

[00:23:46.719]
HELLO.

[00:23:46.989]
WE'RE ON TIME, BUT
WE DO NEED YOUR HELP.

[00:23:49.039]
OUR HELP?

[00:23:50.179]
AREN'T YOU THE FAMOUS
INVESTIGATIVE TEAM?

[00:23:52.519]
OKAY, SO YOU SAW US
ON KSNN LAST NIGHT?

[00:23:55.309]
HOW CAN WE HELP?

[00:23:57.029]
WE HAVE A TON OF INFORMATION
TO GO THROUGH.

[00:24:00.899]
A LOT OF RESIDENTS HAVE
E-MAILED US TO LET US KNOW

[00:24:04.319]
IF THEY SMELLED THE BAD STINK.

[00:24:05.819]
SO WHAT HAVE YOU DONE SO FAR?

[00:24:07.359]
WE STARTED BY WRITING DOWN
WHAT WE KNEW ABOUT THE PROBLEM.

[00:24:10.319]
WE ASKED A LOT OF QUESTIONS, WROTE
DOWN A BUNCH OF NEW QUESTIONS,

[00:24:12.849]
AND TALKED TO A LOT OF EXPERTS.

[00:24:15.469]
SO HERE'S WHAT WE KNOW
ABOUT THE PROBLEM.

[00:24:18.509]
THE PHEWSVILLE HEALTH DEPARTMENT
GAVE A WARNING ON MONDAY THAT A LOT

[00:24:23.049]
OF PEOPLE IN THE TOWN
WERE SMELLING A BAD SMELL,

[00:24:27.829]
BUT NO ONE KNOWS WHERE
THE SMELL IS COMING FROM.

[00:24:30.349]
WE NEED TO FIGURE OUT
WHAT'S CAUSING THE STINK.

[00:24:32.449]
WE ASKED THE RESIDENTS TO E-MAIL US
TO REPORT IF THEY FOUND ANYTHING.

[00:24:38.069]
WE WE'RE HOPING YOU COULD
HELP US GATHER THE COMMENTS.

[00:24:40.599]
WOW.

[00:24:41.089]
LOOK AT ALL THAT E-MAIL.

[00:24:43.219]
WHAT DO WE DO WITH IT?

[00:24:44.529]
HOW ABOUT IF WE START BY
SEPARATING THEM BY THE CITIES:

[00:24:48.519]
PHEWSVILLE, MID CITY, EXVILLE...

[00:24:50.729]
AND BIG CITY.

[00:24:51.829]
YEAH, AND THEN WE CAN
SEPARATE THEM INTO TWO PILES,

[00:24:55.319]
ONE FOR MONDAY AND ONE FOR TUESDAY.

[00:24:57.319]
THAT WILL HELP US TO CHART IT DOWN.

[00:25:05.419]
OH LOOK, NO BODY SMELLED
ANYTHING IN BIG CITY

[00:25:07.419]
OR MID CITY ON EITHER DAY.

[00:25:08.779]
THIS IS WEIRD, LOOK AT
ALL THE PEOPLE IN EXVILLE

[00:25:12.879]
WHO SAID THEY SMELLED
THE USUAL ON BOTH DAYS.

[00:25:16.269]
THE USUAL?

[00:25:16.949]
AND A COUPLE OF PEOPLE SAID
THEY THINK IT'S THE PAPER MILL,

[00:25:21.159]
AND THEY'RE NOT WORRIED.

[00:25:23.239]
HEY, LOOK.

[00:25:24.089]
HERE'S THE PAPER MILL OVER HERE.

[00:25:26.109]
AND IT'S NORTH OF EXVILLE.

[00:25:27.959]
AND LOOK.

[00:25:28.769]
THE TRASH BURNING
PLANT IS OVER HERE TOO.

[00:25:32.259]
BUT ALMOST EVERYONE
IN PHEWSVILLE SAID

[00:25:34.809]
THAT THEY SMELLED SOMETHING REALLY
BAD ON MONDAY BUT NOT ON TUESDAY.

[00:25:40.629]
SO MAYBE IT REALLY
IS THE PAPER MILL.

[00:25:43.349]
WELL?

[00:25:43.489]
IT WOULD HAVE KNOCKED THEM OUT
IN EXVILLE IF IT WAS SO BAD

[00:25:47.209]
IN PHEWSVILLE ON MONDAY.

[00:25:48.109]
BUT PHEWSVILLE DIDN'T
SMELL ANYTHING ON TUESDAY

[00:25:50.189]
WHEN EXVILLE STILL DID.

[00:25:51.929]
MAYBE SOMETHING KEPT THE SMELL
FROM GETTING THERE ON TUESDAY.

[00:25:54.619]
MAYBE WE SHOULD DO AN
EXPERIMENT ON HOW SMELL MOVES.

[00:25:58.789]
EXPERIMENT?

[00:25:59.809]
COOL.

[00:26:00.489]
WAIT A MINUTE.

[00:26:02.259]
NOBODY IN MID CITY
SMELLED IT ON EITHER DAY.

[00:26:05.149]
AND LOOK.

[00:26:06.039]
IT'S RIGHT NEXT TO
THE CHEMICAL PLANT.

[00:26:08.629]
HMM.

[00:26:09.429]
THIS IS REALLY STRANGE.

[00:26:11.399]
COULD WE BE WRONG?

[00:26:12.339]
MAYBE THE CHEMICAL PLANT
ISN'T CAUSING THE STINK.

[00:26:15.749]
BUT YESTERDAY WE FIGURED OUT
THAT IT WAS THE CHEMICAL PLANT,

[00:26:18.939]
I STILL THINK IT IS THAT'S
OUR HYPOTHESIS, REMEMBER?

[00:26:22.489]
BUT WE MIGHT BE WRONG.

[00:26:24.299]
WE NEED AN EXPERT OPINION.

[00:26:25.929]
LET'S GO BACK AND TELL
DR. D AFTER SCHOOL.

[00:26:28.109]
HE MIGHT BE ABLE TO
TELL US IF WE'RE RIGHT.

[00:26:30.569]
LET'S GO.

[00:26:32.169]
HI, DR. D. HELLO AGAIN.

[00:26:41.169]
[00:26:45.119]
WHAT'S WRONG?

[00:26:45.749]
YOU LOOK LIKE YOUR CAT JUST DIED.

[00:26:47.819]
NO, THAT DIDN'T HAPPEN.

[00:26:49.879]
WISHFUL THINKING, BERNIE.

[00:26:51.809]
WE THOUGHT WE HAD THE
PROBLEM FIGURED OUT.

[00:26:54.269]
WE THOUGHT THE STINK WAS
FROM THE CHEMICAL PLANT.

[00:26:58.719]
LOOK AT THIS.

[00:27:00.479]
BUT IF THE STINK WAS COMING
FROM THE CHEMICAL PLANT,

[00:27:04.459]
THE PEOPLE IN MID CITY
WOULD DEFINITELY SMELL IT.

[00:27:06.229]
BUT THEY DIDN'T.

[00:27:08.029]
IT MIGHT HAVE BEEN THE PAPER MILL.

[00:27:09.799]
BUT WHY DIDN'T THE PEOPLE

[00:27:10.969]
IN EXVILLE SMELL IT
REALLY STRONG ON MONDAY?

[00:27:14.649]
AND THEN WHY DIDN'T THE PEOPLE IN
PHEWSVILLE SMELL IT ON TUESDAY?

[00:27:18.289]
EITHER PEOPLE ARE
SMELLING IT DIFFERENTLY,

[00:27:21.109]
OR SOMETHING ELSE IS GOING ON.

[00:27:23.159]
I WAS THINKING MAYBE WE
COULD DO AN EXPERIMENT

[00:27:25.359]
TO SEE HOW SMELL TRAVELS.

[00:27:27.379]
WHAT WOULD YOUR VARIABLES BE THEN?

[00:27:29.169]
VARIABLES?

[00:27:30.099]
REMEMBER WHAT MONICA BARNES SAID?

[00:27:32.999]
IT'S ONE SPECIFIC THING THAT YOU,
THE EXPERIMENTER, HAS CONTROL OVER.

[00:27:38.309]
IT CAN AFFECT OR CHANGE THE
RESULT OF YOUR EXPERIMENT.

[00:27:42.189]
THAT'S RIGHT, LET'S USE MY
WAVE MACHINE AS AN EXAMPLE.

[00:27:44.999]
WHEN I WIGGLE THIS ROD, IT
MAKES WAVES OF MEDIUM HEIGHT.

[00:27:48.569]
THE DISTANCE BETWEEN WAVES
WE CALL THE WAVELENGTH.

[00:27:52.689]
HOW CAN WE CHANGE THE WAVELENGTH?

[00:27:54.509]
I THINK, IF YOU WIGGLE
THE RODS FASTER,

[00:27:57.099]
IT'LL MAKE THE WAVELENGTH SHORTER.

[00:27:58.669]
NO, THE WAVELENGTH WILL BE LONGER.

[00:28:02.059]
WELL, FREQUENCY, OR HOW FAST I
WIGGLE THE ROD, IS THE VARIABLE

[00:28:04.959]
BECAUSE IT AFFECTS THE WAVELENGTH.

[00:28:06.459]
IT'S IMPORTANT TO ONLY CHANGE
ONE VARIABLE AT A TIME.

[00:28:10.789]
LIKE NOT CHANGING
THE WEIGHT AT ALL.

[00:28:14.029]
THAT'S RIGHT, IF WE CHANGE THE
WAVE HEIGHT, THEY CAN GET BIGGER

[00:28:16.669]
OR SMALLER, THAT MIGHT
ALSO AFFECT THE WAVELENGTH.

[00:28:19.329]
LETS TRY IT, I'LL WIGGLE THE
RODS AT A FASTER FREQUENCY

[00:28:22.469]
AT MEDIUM HEIGHT AND
SEE WAS HAPPENS.

[00:28:25.319]
YES!

[00:28:25.439]
I RULE.

[00:28:26.859]
THE WAVELENGTH WAS SHORTER.

[00:28:28.259]
DOES THAT HELP YOU REMEMBER?

[00:28:30.429]
KIND OF.

[00:28:31.359]
I GUESS WE NEED TO THINK
THRU ABOUT HOW A SMELL MOVES.

[00:28:33.649]
OKAY, LET'S GO BACK TO THE
TREE HOUSE AND GET TO WORK.

[00:28:38.099]
BYE.

[00:28:38.599]
BYE-BYE.

[00:28:39.369]
SEE YOU, DR. D.

[00:28:44.029]
[00:28:45.219]
HEY, THEY'RE TALKING
ABOUT US AGAIN.

[00:28:47.049]
AN UPDATE THIS WEDNESDAY AFTERNOON.

[00:28:48.759]
THE STINK IS BACK IN
THE TOWN OF PHEWSVILLE.

[00:28:51.229]
AND NOW EXVILLE RESIDENTS ARE
REPORTING A DIFFERENT SMELL.

[00:28:55.249]
HOPEFULLY, THE TREE HOUSE
DETECTIVES ARE STILL WORKING

[00:28:57.619]
ON THE CASE.

[00:28:58.499]
IT'S STILL A PROBLEM;
THE STINK DIDN'T GO AWAY.

[00:29:01.059]
OKAY, WE BETTER LOOK AT THIS AGAIN.

[00:29:05.209]
OH, NO.

[00:29:05.469]
NOT THAT AGAIN.

[00:29:06.979]
SO, WHATS UP?

[00:29:08.059]
HAVE THE TREE HOUSE DETECTIVES
FOUND THE SOURCE OF THE STINK?

[00:29:11.939]
WHAT DO YOU THINK?

[00:29:12.989]
IS THEIR HYPOTHESIS RIGHT OR WRONG?

[00:29:15.149]
YOU'LL WANT TO JOIN US NEXT
TIME FOR: WE'RE ALMOST THERE.

[00:29:24.149]
[00:29:25.409]
HEY, MY NEIGHBOR IS A
SPECIAL NOSE DOCTOR.

[00:29:27.189]
MAYBE KNOWING HOW
PEOPLE SMELL CAN TELL US

[00:29:30.879]
IF THE RESIDENTS ARE SMELLING
THE STINK DIFFERENTLY.

[00:29:36.559]
COME ON.

[00:29:39.189]
LET'S DIAL HIM UP AND SEE
IF HE CAN TELL US ANYTHING.

[00:29:45.189]
HIS NAME IS DR. GEORGE SCHECHTER.

[00:29:47.139]
HERE HE IS.

[00:29:48.679]
OH, HELLO.

[00:29:49.449]
HI, BIANCA.

[00:29:50.059]
HI.

[00:29:50.249]
THIS IS JACOB AND MATTHEW.

[00:29:51.949]
WE'RE TRYING TO SOLVE A
STINK PROBLEM FOR KSNN.

[00:29:55.099]
SO ARE YOU THE TREE
HOUSE DETECTIVES?

[00:29:57.159]
THAT'S US.

[00:29:58.339]
WE WANT TO KNOW WHY WE
SMELL CERTAIN THINGS.

[00:30:01.979]
OR HOW OUR NOSES WORK.

[00:30:04.099]
WITH MORE INFORMATION, WE MIGHTBE
ABLE TO SNIFF OUT THE PROBLEM.

[00:30:08.559]
EVERYTHING THAT SMELLS OR HAS AN
AROMA HAS MICROSCOPIC MOLECULES,

[00:30:14.639]
OR LITTLE PARTICLES, THAT COME
OFF AND DRIFT INTO THE AIR.

[00:30:19.209]
ONCE IT GETS INTO THE AIR, IT
COMES IN CONTACT WITH THE NOSE.

[00:30:22.649]
IT GOES INSIDE THE NOSE AND THEN
TO A VERY SPECIAL PLACE THAT'S SET

[00:30:27.939]
UP JUST TO HELP YOU
UNDERSTAND WHAT THE SMELL IS.

[00:30:31.719]
BUT HOW DOES YOUR BRAIN
RECOGNIZE DIFFERENT SMELLS?

[00:30:35.289]
DEPENDING UPON THE KIND OF
MOLECULES THAT COME INTO THE NOSE,

[00:30:39.269]
THE BRAIN WILL UNDERSTAND WHAT
IS GOING ON WITH THE SMELL.

[00:30:43.489]
NOW, FOR EXAMPLE, PIZZA MAY HAVE
FIVE LITTLE PLACES IN THE NOSE

[00:30:49.949]
FOR ITS IDENTIFICATION, WHEREAS
PERFUME MAY HAVE SIX OR SEVEN,

[00:30:54.529]
AND EACH OF THOSE
PLACES IS VERY DIFFERENT.

[00:30:57.539]
DO ALL OF US SMELL THE SAME THING?

[00:30:59.669]
WELL, WE DO NOT KNOW IF
EVERYBODY SMELLS THE SAME SMELLS.

[00:31:04.269]
WHAT WE DO KNOW IS THAT PEOPLE
CAN IDENTIFY THINGS THE SAME.

[00:31:08.879]
NOW, FOR EXAMPLE,
TWO CHILDREN WALKING

[00:31:11.339]
INTO THE KITCHEN MAY SMELL
SOMETHING COOKING ON THE STOVE,

[00:31:15.849]
AND WILL KNOW RIGHT
AWAY, FOR EXAMPLE,

[00:31:17.869]
THAT THEIR MOTHER
IS MAKING HOT DOGS.

[00:31:19.809]
WHAT CAN CHANGE THAT IS IF ONE OF
THE CHILDREN CAME FROM THE GARAGE

[00:31:24.829]
AND HAD BEEN WATCHING THEIR
DADDY CLEANING A PAINTBRUSH

[00:31:28.549]
WITH TURPENTINE, AND THAT
TURPENTINE SMELL WAS IN THEIR NOSE.

[00:31:31.789]
THAT WOULD CHANGE HOW
THAT PERSON SMELLS.

[00:31:33.699]
I HAVE SOME QUESTIONS.

[00:31:35.729]
WHAT ABOUT DOGS OR OTHER ANIMALS?

[00:31:38.139]
DO THEY HAVE THE SAME NOSE
AS WE DO FOR SNIFFING?

[00:31:41.129]
THE SAME NOSE?

[00:31:41.939]
WELL, THAT'S A GOOD QUESTION.

[00:31:46.349]
YOU'VE HEARD THE SAYING,
"YOU'VE GOT A NOSE LIKE A SHARK."

[00:31:50.509]
YES.

[00:31:51.559]
I HAVE A FRIEND YOU
MAY WANT TO VISIT

[00:31:53.219]
AT THE VIRGINIA MARINE
SCIENCE MUSEUM.

[00:31:55.699]
TO CHECK OUT SHARKS?

[00:31:57.379]
WE'LL MAKE THE TIME.

[00:31:58.879]
GOOD LUCK ON YOUR PROJECT.

[00:32:00.369]
SEE YOU LATER.

[00:32:00.989]
IT'S REALLY TOO BAD
BIANCA COULDN'T MAKE IT.

[00:32:08.989]
I'LL BE SURE TO TAKE
GOOD NOTES FOR HER.

[00:32:14.359]
HEY LOOK, THIS IS A COOL AQUARIUM.

[00:32:16.459]
HEY, GUYS.

[00:32:17.219]
COME ON OVER HERE.

[00:32:18.369]
MY NAME'S BETH FIRCHAU.

[00:32:19.459]
I'M THE CURATOR HERE AT THE
VIRGINIA MARINE SCIENCE MUSEUM.

[00:32:22.039]
DR. SCHECHTER TOLD ME
YOU WOULD BE COMING.

[00:32:24.449]
WHAT'S THIS?

[00:32:25.849]
THIS IS THE SEAL HABITAT
BUT I BET YOU GUYS WANT

[00:32:28.269]
TO SEE THE SHARK AQUARIUM.

[00:32:29.489]
COME ON INSIDE.

[00:32:30.199]
LET'S CHECK IT OUT.

[00:32:32.689]
MAYBE THAT BIG NOSE CAN HELP US
WORK THROUGH THIS STINK PROBLEM.

[00:32:36.229]
WE ARE LEARNING A LOT ABOUT SMELLS.

[00:32:37.959]
WE VISITED DR. SCHECHTER, AND
HE TOLD US HOW OUR NOSES WORK.

[00:32:40.989]
MAYBE YOU AND THESE SHARKS CAN
HELP US LEARN MORE ABOUT SMELLS.

[00:32:44.589]
WE KNOW THAT SOME CHEMICAL
COMPOUNDS HAVE SMELLS TO THEM,

[00:32:47.549]
AND OUR NOSES HAVE SPECIAL
CELLS THAT RECEIVE THOSE SMELLS.

[00:32:51.169]
THAT'S RIGHT.

[00:32:51.889]
THOSE CELLS ARE CALLED
OLFACTORY CHEMORECEPTORS.

[00:32:54.539]
AND SHARKS HAVE THEM TOO.

[00:32:56.269]
IF YOU LIVE OUT OF THE
WATER LIKE YOU AND ME,

[00:32:58.899]
THE AIR CARRIES THE
SMELL TO OUR NOSES.

[00:33:01.229]
IF YOU LIVE IN THE WATER,
THE WATER CARRIES THE SMELL.

[00:33:05.749]
WHAT?

[00:33:07.669]
WHAT THIS MEANS IS, IS THAT ANIMALS
LIKE THOSE SHARKS HAVE A SENSE

[00:33:12.049]
OF SMELL, EVEN UNDER WATER.

[00:33:14.009]
DOES THIS MEANS SHARKS HAVE A
BETTER SENSE OF SMELL THAN WE DO?

[00:33:17.299]
SO THEY CAN SMELL HAMBURGERS?

[00:33:20.179]
BETTER THAN ME?

[00:33:21.549]
WELL, NOT EXACTLY.

[00:33:22.729]
THEIR SENSE OF SMELL
IS TUNED TO THE SMELLS

[00:33:24.729]
THAT HELP THEM SURVIVE IN THE WILD.

[00:33:26.629]
THEY ARE TOP PREDATORS
AND BEING ABLE

[00:33:28.599]
TO SMELL THEIR PREY
IS VERY IMPORTANT.

[00:33:30.959]
DID YOU KNOW THAT THE SHARK'S
BRAIN IS DEVOTED MOSTLY

[00:33:33.569]
TO ITS SENSE OF SMELL?

[00:33:35.229]
SO WHEN IT COMES TO SMELLING,
SHARKS REALLY KNOW HOW TO GET

[00:33:38.629]
TO THE BOTTOM OF THE STINKY STUFF.

[00:33:40.709]
TAKE A LONG LOOK AT
THIS SHARKS NOSE.

[00:33:42.909]
DID YOU KNOW THAT IT CAN
SNIFF OUT ONE DROP OF BLOOD

[00:33:45.559]
IN 25 GALLONS OF WATER?

[00:33:47.459]
I GUESS WE BETTER GO BACK
AND PIECE THIS ALL TOGETHER.

[00:33:50.979]
SEE YOU LATER.

[00:33:51.519]
THANKS A LOT.

[00:33:55.069]
BYE.

[00:33:55.159]
THAT WAS SO COOL.

[00:33:57.049]
NOW WE KNOW THAT SOME OF
US SMELL MORE THAN OTHERS.

[00:33:59.579]
BUT WOULD A WHOLE TOWN USE
THEIR NOSES DIFFERENTLY?

[00:34:01.839]
HMM, THAT'S A GOOD QUESTION.

[00:34:04.029]
I GUESS WE STILL NEED TO FIGURE OUT
HOW SMELL MOVES THROUGH THE AIR.

[00:34:09.669]
LET'S SEE.

[00:34:10.019]
I HAVE AN IDEA.

[00:34:12.049]
THIS MAY SEEM WEIRD, BUT I
WONDER IF ALL SMELLS TRAVEL

[00:34:16.699]
THROUGH THE AIR AT THE SAME SPEED.

[00:34:19.699]
HUH?

[00:34:20.219]
YES, I WONDER IF THE SOURCE
OF THE STINK CAN MOVE FASTER

[00:34:24.399]
TO ONE AREA THAN ANOTHER.

[00:34:26.369]
HEY, THAT MAY BE RELATED TO
WHY THE TOWNS ARE SMELLING THE

[00:34:29.809]
SMELL DIFFERENTLY.

[00:34:31.099]
DO YOU WANT TO TEST
IT IN OUR TREE HOUSE?

[00:34:33.029]
YOU MEAN DO OUR OWN
LITTLE SMELL EXPERIMENT?

[00:34:36.219]
YEAH.

[00:34:36.369]
I HAVE A BOTTLE OF AIR SPRAY.

[00:34:38.809]
SEE THIS?

[00:34:39.569]
HMM.

[00:34:40.119]
LET'S STAND IN THE
MIDDLE OF THE ROOM.

[00:34:42.579]
OKAY.

[00:34:43.139]
STAND THERE.

[00:34:43.879]
I'M GOING TO SPRAY THIS.

[00:34:45.829]
YOU GUYS COUNT TO SEE HOW LONG
IT TAKES TO REACH YOUR NOSE.

[00:34:50.259]
NOW CLOSE YOUR EYES.

[00:34:51.849]
OKAY, LET'S TRY IT.

[00:34:54.419]
IT TOOK ME EXACTLY THREE SECONDS.

[00:34:58.279]
IT TOOK ME THREE SECONDS TOO.

[00:35:02.879]
WHAT DOES IT MEAN?

[00:35:04.739]
IT MUST MEAN THAT WE HAVE THE
SAME NOSES-- BIG ONES, RIGHT?

[00:35:10.459]
NO.

[00:35:11.209]
IT MEANS SMELL TRAVELS AT
THE SAME RATE OF SPEED.

[00:35:15.099]
IF IT DOES, THEN WHY WOULDN'T
EVERYONE EVENTUALLY SMELL IT?

[00:35:19.779]
HMM.

[00:35:19.839]
ANOTHER GOOD QUESTION.

[00:35:21.309]
WHAT DO YOU THINK?

[00:35:22.529]
I THINK NEXT TIME WE MEET, WE
SHOULD DO MORE EXPERIMENTING.

[00:35:26.409]
YOU MEAN MORE WORK?

[00:35:27.849]
YES, THAT'S HOW WE
GET THE JOB DONE.

[00:35:30.629]
HERE WE GO AGAIN.

[00:35:36.829]
HI, DR. D. IT LOOKS LIKE YOU
FIXED THINGS UP AROUND HERE.

[00:35:40.649]
HI, GERONIMO.

[00:35:41.729]
HI, BERNIE.

[00:35:42.779]
YOU THREE LOOK A LOT HAPPIER
THAN WHEN I SAW YOU LAST.

[00:35:44.739]
DON'T THEY GERONIMO AND BERNIE?

[00:35:46.459]
WE FEEL BETTER NOW.

[00:35:47.279]
WE MIGHT BE GETTING CLOSER
TO FINDING THE STINK.

[00:35:51.049]
GUESS WHAT?

[00:35:51.449]
WE HAVE AN IDEA OF HOW STINK
TRAVELS TO THE DIFFERENT CITIES.

[00:35:55.549]
WE STOOD IN A CIRCLE AND
SPRAYED SOMETHING INTO THE AIR.

[00:35:58.929]
AND IT REACHED OUR NOSES IN
EXACTLY THE SAME AMOUNT OF TIME.

[00:36:03.419]
SO, MAYBE THE CITIES ARE LOCATED
AT EQUAL DISTANCE FROM THE STINK.

[00:36:06.999]
WHAT DO YOU THINK OF THAT, DR. D?

[00:36:09.809]
WHOA, WHOA, GUYS, HOLD ON.

[00:36:11.369]
YOU MIGHT BE GETTING A
LITTLE AHEAD OF YOURSELVES.

[00:36:13.619]
FIRST OF ALL, HAVE YOU BEEN
CAREFUL OF HOW YOU EXPERIMENTED?

[00:36:16.419]
WE THINK SO.

[00:36:18.099]
DID YOU STAND AN EQUAL
DISTANCE APART?

[00:36:20.079]
IS THERE ANYTHING ELSE IN
THE CLUBHOUSE THAT SMELLS?

[00:36:25.179]
THE BIG QUESTION IS:
HAVE YOU BEEN CAREFUL

[00:36:27.799]
TO KEEP EVERYTHING THE SAME?

[00:36:30.389]
WHAT ARE YOU TALKING ABOUT?

[00:36:32.189]
THINK ABOUT YOUR EXPERIMENT
CAREFULLY.

[00:36:34.259]
REMEMBER, YOU MUST PLAN IT AND NOT
SIMPLY JUMP INTO IT FEET FIRST.

[00:36:39.999]
YOU'VE ONLY TESTED THIS
ON THE THREE OF YOU.

[00:36:41.769]
THIS IS NOT A TRUE SAMPLING.

[00:36:44.059]
YOU NEED TO TEST IT
ON A LARGER GROUP.

[00:36:46.009]
EVERYONES SENSE OF
SMELL IS DIFFERENT.

[00:36:48.569]
WE KNOW BERNIE HAS
THE BEST NOSE IN TOWN.

[00:36:50.779]
BUT WHAT ABOUT YOU, GERONIMO?

[00:36:53.039]
YOU'RE RIGHT.

[00:36:53.439]
BERNIE HAS A GREAT SNIFFER.

[00:36:55.059]
BUT GETTING BACK TO
YOUR EXPERIMENT--

[00:36:57.039]
MORE PEOPLE WILL GIVE YOU A TRUER
PICTURE WITH WHAT YOU ARE LOOKING

[00:36:59.919]
AT IN YOUR EXPERIMENT.

[00:37:01.739]
WELL, WE COULD TEST THIS
ON OUR FRIENDS AT SCHOOL.

[00:37:04.099]
WE HAVE A LOT OF DIFFERENT
SETS OF NOSES IN OUR CLASS.

[00:37:07.709]
LET'S GO TO SCHOOL.

[00:37:09.959]
THIS'LL BE GREAT.

[00:37:13.089]
THANKS, DR. D. THIS IS GREAT.

[00:37:19.279]
WE HAVE ENOUGH KIDS
TO PULL THIS OFF.

[00:37:24.309]
WE NEED TO DIVIDE THE
CLASS INTO GROUPS OF TWO.

[00:37:27.439]
EXCUSE ME.

[00:37:28.619]
EXCUSE ME.

[00:37:30.059]
I HAVE AN IDEA.

[00:37:31.389]
ONE GROUP COULD ACTUALLY
DO THE EXPERIMENT,

[00:37:33.829]
AND THE OTHER GROUP COULD
TIME AND RECORD THE DATA.

[00:37:37.289]
HERE ARE YOUR STOPWATCHES.

[00:37:38.239]
OKAY, LET'S GET TO IT.

[00:37:39.769]
YOU ALL NEED TO STAND IN A CIRCLE.

[00:37:42.579]
EVERYONE TWO METERS FROM ME
AND ONE METER FROM EACH OTHER.

[00:37:45.419]
HERE'S A METER STICK.

[00:37:47.089]
I'LL BE THE MEASURING MAN.

[00:37:47.899]
ALL YOU SNIFFERS NEED TO PAIR UP
WITH SOMEBODY WITH A STOPWATCH.

[00:37:52.119]
AND RECORDERS, STAND BY.

[00:37:53.559]
THAT LOOKS GOOD.

[00:37:54.179]
DOES IT LOOK GOOD, MRS. MAZAITIS?

[00:37:55.649]
IT LOOKS VERY GOOD.

[00:37:57.409]
I'LL STAND IN THE MIDDLE.

[00:37:59.549]
I'LL SPRAY THE SPRAY.

[00:38:00.709]
WHEN YOU SMELL IT, RAISE YOUR HAND,

[00:38:02.629]
AND YOUR PARTNER WILL
PUSH THE STOPWATCH.

[00:38:06.079]
OKAY.

[00:38:06.199]
LET'S GO START THE EXPERIMENT.

[00:38:08.079]
[00:38:24.309]
OK RECORDERS, WHAT
WERE YOUR RESULTS?

[00:38:26.879]
I GOT 7.

[00:38:28.579]
14.

[00:38:29.689]
I HAVE 15.

[00:38:31.229]
THIS IS REALLY STRANGE.

[00:38:33.429]
REALLY STRANGE.

[00:38:34.489]
I THOUGHT THE RESULTS
WOULD BE THE SAME.

[00:38:36.639]
I CAN'T BELIEVE THESE
NUMBERS ARE DIFFERENT.

[00:38:38.979]
THERE ALL DIFFERENT.

[00:38:40.069]
I GUESS SCIENCE ISN'T
ALL THAT PREDICTABLE.

[00:38:42.819]
I EXPECTED IT TO BE LIKE
OUR OTHER EXPERIMENT

[00:38:45.919]
WHERE ALL THE NUMBERS
WERE THE SAME.

[00:38:48.769]
WHAT DO WE DO NOW?

[00:38:49.569]
I GUESS WE GO BACK AND
TELL DR. D. BYE, EVERYONE.

[00:38:52.799]
THANKS FOR YOUR HELP.

[00:38:55.109]
BYE.

[00:38:56.929]
BYE.

[00:38:58.479]
HELLO, DR. D?

[00:39:00.089]
WHERE IS HE?

[00:39:01.139]
HELLO, DR. D. WHERE ARE YOU?

[00:39:02.259]
HOLD ON.

[00:39:03.669]
HOLD ON.

[00:39:04.299]
I'M RIGHT HERE.

[00:39:05.089]
WHAT'S WRONG?

[00:39:06.259]
YOU SOUND A LITTLE ANXIOUS
AND LOOK A LITTLE WINDBLOWN.

[00:39:09.599]
WELL, WE THOUGHT WE
KNEW THE ANSWER.

[00:39:10.869]
OUR EXPERIMENT AT THE TREE
HOUSE SHOWED THAT SMELL MOVED

[00:39:14.339]
AT THE SAME RATE OF SPEED.

[00:39:15.239]
BUT AT SCHOOL, IT
SURE WAS DIFFERENT.

[00:39:18.049]
LET'S TALK ABOUT THE
TEST CONDITIONS.

[00:39:19.499]
WERE THEY ALLTHE SAME?

[00:39:21.649]
WELL, THE WINDOWS WERE SHUT, AND
THE FANS AND AC WERE BOTH OFF.

[00:39:25.899]
I WAS THE MEASURE MAN.

[00:39:26.729]
I KNOW ALL OUR FRIENDS WERE
STANDING EQUAL DISTANCE

[00:39:30.759]
FROM EACH OTHER.

[00:39:31.409]
I HAVE AN IDEA.

[00:39:32.939]
DID YOU WATCH EVERYONE AND HOW
THEY SMELLED THE AIR SPRAY?

[00:39:35.579]
DID THEY BREATHE NORMALLY OR
TAKE A BIG SNIFF LIKE THIS?

[00:39:38.999]
I KNOW GEORGE HAD A COLD.

[00:39:41.419]
YOU CAN'T ALWAYS CONTROL
THE SITUATION;

[00:39:43.719]
THERE MIGHT BE VARIATIONS
IN SENSITIVITY

[00:39:45.539]
ON HOW YOUR FRIENDS
SMELLED THE AIR SPRAY.

[00:39:47.729]
LOOK AT THE DATA YOU
HAVE COLLECTED,

[00:39:48.959]
YOU MAY WANT TO IGNORE THE 45 AND
THE 20 BECAUSE AS YOU CAN SEE,

[00:39:52.479]
THEY'RE PRETTY FAR AWAY FROM
THE OTHER NUMBERS IN THE GROUP.

[00:39:55.469]
THESE NUMBERS COULD BE
MISTAKES AND MIGHT BE MISLEADING

[00:39:58.639]
WHEN YOU'RE TRYING TO
MAKE SENSE OF YOUR DATA.

[00:40:01.539]
IF YOU LOOK AT THE REST OF
THE NUMBERS ARE VERY CLOSE

[00:40:04.099]
BUT NOT THE SAME, BECAUSE OF
VARIATIONS, LIKE GEORGE'S COLD.

[00:40:07.899]
SO BASICALLY WE WERE RIGHT.

[00:40:10.439]
SMELL DOES TRAVEL AT
THE SAME RATE OF SPEED,

[00:40:12.399]
BUT DIFFERENT THINGS INFLUENCE IT.

[00:40:15.039]
DO CERTAIN THINGS MAKE
SMELLS MOVE FASTER OR SLOWER?

[00:40:19.239]
I THINK YOU NEED TO DO
SOME MORE INVES-- WE KNOW.

[00:40:21.449]
MORE INVESTIGATING.

[00:40:23.249]
WE'RE NEVER GOING TO GET ON KSNN.

[00:40:27.459]
HMM.

[00:40:28.359]
WHAT'S THAT NOISE?

[00:40:30.829]
OH, IT'S JUST THE WIND
BLOWING, IT'S NASTY OUTSIDE.

[00:40:33.499]
HMM.

[00:40:33.559]
I WONDER.

[00:40:36.009]
COULD THIS BE ONE OF OUR VARIABLES?

[00:40:38.309]
IT COULD BE.

[00:40:39.289]
I THINK YOU THREE NEED TO
DO SOME MORE EXPERIMENTING.

[00:40:41.469]
I HAVE A GUT FEELING
THIS COULD BE THE ANSWER.

[00:40:48.089]
YOU MAY BE RIGHT.

[00:40:48.739]
YOU HAVE A LOT OF GUTS.

[00:40:50.939]
I DO NOT.

[00:40:52.679]
DO SO.

[00:40:52.939]
WHATEVER!

[00:40:53.149]
GOOD AFTERNOON THIS THURSDAY,
WE HAVE AN UPDATE ON THE STINK.

[00:40:55.929]
NOW SOME RESIDENTS IN BIG CITY
ARE REPORTING THEY'RE SMELLING

[00:40:58.859]
SOMETHING REALLY BAD.

[00:41:00.619]
IT APPEARS THIS MYSTERIOUS SMELL
IS MOVING IN A DIFFERENT DIRECTION.

[00:41:03.939]
THIS WIND'S NOT HELPING
THIS SITUATION.

[00:41:05.859]
TODAY IT'S BLOWING FROM THE WEST.

[00:41:08.409]
THAT'S TOWARDS US.

[00:41:09.579]
I TOLD YOU I SMELLED SOMETHING.

[00:41:11.119]
IT SMELLS LIKE OLD SOCKS.

[00:41:12.959]
I STILL THINK IT'S THE
WIND MOVING THINGS AROUND.

[00:41:16.569]
THAT'S BRILLIANT.

[00:41:18.689]
YOU'LL SEE WHAT I MEAN.

[00:41:20.459]
LET'S GO TO OUR BOARD.

[00:41:24.989]
I DO LIKE USING THIS.

[00:41:26.259]
IT HELPS US CHART OUT OUR
PLAN TO ATTACK THE STINK.

[00:41:29.309]
WE KNOW SOMETHING IS DRIVING THE
SMELL, AND IT'S COMING OUR WAY.

[00:41:34.439]
WE KNOW IT'S REALLY WINDY.

[00:41:35.309]
WE NEED TO FIND OUT:
DOES WIND MOVE SMELL?

[00:41:39.879]
SO WHERE DO WE GO?

[00:41:41.239]
DEFINITELY TO OUR
SCHOOL TO DO EXPERIMENTS.

[00:41:43.369]
^00:41:44 MAYBE TO SEE
THOSE WEATHER PEOPLE.

[00:41:45.339]
THEY KNOW ALL ABOUT
WIND AND WIND DIRECTION.

[00:41:47.949]
OUR MOM COULD HOOK US UP
WITH SOME SCIENTISTS AT NASA,

[00:41:50.649]
BECAUSE THEY DEFINITELY KNOW
WHY THINGS MOVE THROUGH THE AIR.

[00:41:57.049]
LET'S GO TRY OUR EXPERIMENT
AT SCHOOL.

[00:42:02.239]
HEY, LOOK.

[00:42:04.989]
IT'S A CLOWN FACENOW
INSTEAD OF A SPIDER.

[00:42:10.399]
WEIRD.

[00:42:11.119]
MAYBE WE CAN CATCH
UP WITH EVERYONE.

[00:42:13.299]
LET'S GO.

[00:42:13.989]
I WONDER WHAT WOULD BE
THE SAME FEELING AS WIND.

[00:42:16.449]
YOU HAVE A LOT OF HOT AIR.

[00:42:23.469]
WHY DON'T YOU JUST SIT
THERE AND BLOW AT THE SPRAY?

[00:42:26.729]
YEAH, RIGHT.

[00:42:27.239]
HEY, MAYBE A FAN.

[00:42:28.199]
THAT MIGHT WORK.

[00:42:31.019]
YA, OK, THIS TIME, SOME
PEOPLE TO FRONT OF THE FAN.

[00:42:35.769]
SOME TO THE BACK,
AND SOME TO THE SIDE.

[00:42:38.089]
OKAY.

[00:42:38.499]
EVERYONE, CLOSE YOUR EYES.

[00:42:39.999]
WHEN I RELEASE THE SECRET SMELL,
RAISE YOUR HAND WHEN YOU SMELL IT.

[00:42:44.319]
I'LL TURN ON THE FAN
AND GET THE STOPWATCHES.

[00:42:48.629]
I'LL BE THE MEASURING MAN TOO.

[00:42:49.779]
I'LL MAKE SURE EVERYONE
IS TWO METERS APART.

[00:42:52.859]
OKAY, LET'S COUNT HER DOWN.

[00:42:53.449]
AND 5, 4, 3, 2, 1.

[00:42:56.999]
WOW.

[00:42:57.609]
LOOK AT THOSE HANDS GO UP.

[00:43:02.049]
I WONDER WHY THOSE STANDING
IN THE BACK AND TO THE SIDE

[00:43:04.689]
OF THE FAN AREN'T
RAISING THEIR HANDS.

[00:43:06.049]
OH, THERE THEY GO.

[00:43:08.369]
LOOK AT THEM NOW.

[00:43:09.539]
LET'S DO THIS EXPERIMENT AGAIN TO
SEE IF WE GET THE SAME RESULTS.

[00:43:17.549]
DO YOU NOTICE A PATTERN?

[00:43:25.209]
I THINK I DO NOTICE SOMETHING.

[00:43:28.039]
EVERYONE STANDING IN FRONT

[00:43:29.879]
OF THE FAN SMELLS THE
SPRAY REALLY, REALLY FAST.

[00:43:33.519]
BUT LOOK HOW LONG IT TOOK
THOSE STANDING IN THE BACK

[00:43:35.479]
AND TO THE SIDE OF THE
FAN: ALMOST TWICE AS LONG.

[00:43:38.859]
THIS LOOKS LIKE A PATTERN.

[00:43:40.709]
I BET YOU THE WIND IS
PUSHING THE STINK TOWARDS US.

[00:43:44.079]
IN FACT, I CAN STILL
SMELL IT OUTSIDE.

[00:43:46.249]
WE MIGHT BE ON TO SOMETHING.

[00:43:48.279]
LET'S DO THE EXPERIMENT
ONE MORE TIME

[00:43:49.939]
AND EXAMINE THE DATA CAREFULLY.

[00:43:52.219]
OKAY, HERE WE GO AGAIN.

[00:43:55.019]
THE JOB OF BEING A SCIENTIST
IS A LOT OF HARD WORK.

[00:43:59.219]
WHAT DO YOU THINK?

[00:44:00.309]
DO YOU KNOW WHAT'S
STIRRING UP THE STINK?

[00:44:02.179]
CAN YOU FIGURE IT OUT BEFORE WE DO?

[00:44:04.319]
I SURE HOPE SO.

[00:44:07.029]
SEE YOU LATER.

[00:44:07.739]
SO WHAT'S UP?

[00:44:09.279]
WILL THE TREE HOUSE DETECTIVES
SOLVE THE PROBLEM BEFORE THE STINK

[00:44:11.689]
TAKES OVER THEIR TOWN?

[00:44:12.809]
COULD WIND BE THE VARIABLE
THAT LEADS THEM TO THE SOURCE?

[00:44:15.769]
WILL THE FAN EXPERIEMENT BE TH
KEY IN UNLOCKING THE HIDDEN STINK.

[00:44:19.059]
YOU'LL WANT TO JOIN US
NEXT TIME FOR: THIS IS IT,

[00:44:21.719]
THE CONCLUSION YOU
WON'T WANT TO MISS.

[00:44:30.719]
[00:44:31.299]
THIS IS A KSNN WEATHER UPDATE.

[00:44:33.229]
AFTER THE STRONG WESTERLY
WINDS WE HAD YESTERDAY,

[00:44:35.659]
IT APPEARS THAT THE WIND HAS
SHIFTED BACK FROM THE NORTH TODAY.

[00:44:38.749]
LOOKING AHEAD TO THE
WEEKEND, EXPECT SUNNY SKIES.

[00:44:42.079]
THIS WEATHER GUY HAS ALL
THE INFORMATION WE NEED.

[00:44:44.219]
LET'S GO TALK TO HIM.

[00:44:45.889]
KSNN IS JUST AROUND THE CORNER.

[00:44:47.949]
LET'S GET UP AND GO.

[00:44:51.479]
HI.

[00:44:51.929]
AREN'T YOU THE GUY WE SAW ON TV?

[00:44:54.969]
THAT'S ME, I'M CRAIG MOELLER.

[00:45:02.539]
I'M ONE OF THE METEOROLOGIST
HERE AT CHANNEL 13.

[00:45:05.459]
WE SEE YOU ON TV ALL THE TIME.

[00:45:07.699]
YOU'RE ALWAYS TELLING
US ABOUT THE WEATHER.

[00:45:09.209]
YOU TELL US WHEN IT'S
GOING TO RAIN.

[00:45:10.679]
BEING ON TV IS JUST A
SMALL PART OF MY JOB.

[00:45:12.919]
A BIG PART OF MY JOB IS LOOKING
AT WEATHER MAPS LIKE THESE.

[00:45:15.609]
THEY TELL ME ABOUT THE
TEMPERATURE, THE AIR PRESSURE,

[00:45:18.069]
AND THE WIND DIRECTION.

[00:45:19.719]
WIND DIRECTION?

[00:45:20.449]
THAT'S WHAT WE'RE
HERE TO TALK ABOUT.

[00:45:22.729]
YOU SEE, WE WANT TO
BE ON TV LIKE YOU.

[00:45:25.229]
WE'RE TRYING TO FIND THE SOURCE
OF THE STINK THAT KSNN REPORTET.

[00:45:28.069]
I HEARD ABOUT THAT.

[00:45:29.189]
MAYBE I CAN HELP YOU.

[00:45:30.079]
COME ON.

[00:45:32.309]
MR. MOELLER, WHAT GENERATES WIND?

[00:45:34.839]
WE GET WIND WHEN THERE ARE
DIFFERENCES IN THE AIR PRESSURE.

[00:45:37.209]
REMEMBER, WIND BLOWS FROM
HIGH PRESSURE TO LOW PRESSURE.

[00:45:40.259]
HAVE YOU EVER GONE TO THE BEACH
AND MAYBE BLOWN UP A BEACH BALL?

[00:45:43.459]
YA.

[00:45:43.889]
OKAY, WHAT HAPPENS
WHEN YOU BLOW IT UP

[00:45:45.679]
AND DON'T PUT THE
CAP BACK ON THE BALL?

[00:45:48.129]
ALL THE AIR BLOWS OUT.

[00:45:49.009]
ALL THE AIR BLOWS OUT.

[00:45:50.089]
BECAUSE THE PRESSURE
INSIDE THE BALL IS GREATER

[00:45:52.919]
THAN THE PRESSURE OUTSIDE.

[00:45:54.249]
WHEN THE AIR MOVES FROM INSIDE THE
BALL TO OUT, THAT'S BASICALLY WIND.

[00:45:58.219]
I HAVE A QUESTION.

[00:45:59.209]
DOES WIND EVER CHANGE DIRECTION?

[00:46:01.049]
IT SURE DOES.

[00:46:01.969]
AS A MATTER OF FACT, I'M GOING TO
SHOW YOU SOMETHING RIGHT OVER HERE.

[00:46:04.159]
THIS IS A WEATHER STATION.

[00:46:05.519]
ONE OF THE INSTRUMENTS YOU
SEE RIGHT ON TOP THERE--

[00:46:07.929]
THAT'S CALLED AN ANEMOMETER.

[00:46:09.499]
THAT'S USED TO MEASURE
THE STRENGTH OF THE WIND.

[00:46:11.979]
AND THIS IS A WIND VANE.

[00:46:14.539]
THIS MEASURES THE DIRECTION.

[00:46:15.809]
IT'S PREPARED TO CHANGE
WITH THE WIND.

[00:46:18.169]
LET ME SHOW YOU SOMETHING OVER ON
THIS COMPUTER, THIS IS PRETTY COOL.

[00:46:21.669]
THIS IS A WEATHER MAP.

[00:46:22.559]
WE'VE GOT AREAS OF LOW
PRESSURE AND HIGH PRESSURE.

[00:46:25.019]
YOU'LL SEE THE WINDS AROUND
HIGH PRESSURE TRAVEL CLOCKWISE;

[00:46:28.829]
AND AROUND LOW PRESSURE
TRAVEL COUNTERCLOCKWISE.

[00:46:31.969]
AS YOU LOOK AT THAT, WHICH
WAY IS THE WIND BLOWING?

[00:46:34.349]
SOUTH.

[00:46:35.099]
FROM THE SOUTH.

[00:46:35.889]
EXACTLY.

[00:46:36.459]
NOW, TAKE A LOOK AT TOMORROW.

[00:46:37.739]
WITH ALL OF THESE FEATURES MOVING
OVER TO THE EAST A LITTLE BIT,

[00:46:40.909]
WE HAVE THE HIGH PRESSURE
JUST TO THE WEST,

[00:46:42.729]
LOW PRESSURE JUST TO OUR EAST.

[00:46:44.309]
WHICH WAY IS THE WIND BLOWING?

[00:46:49.009]
NORTH.

[00:46:49.829]
FROM THE NORTH.

[00:46:51.639]
AS YOU CAN SEE, THE WIND
DOES CHANGE DIRECTION.

[00:46:54.429]
MR MOELLER, CAN WIND MOVE SMELL?

[00:46:57.359]
IT SURE CAN.

[00:46:58.179]
WIND CAN MOVE A LOT OF
THINGS, IT CAN MOVE THE SMELLS;

[00:47:00.689]
IT CAN MOVE WATER DROPLETS;
IT CAN MOVE VOLCANIC ASH.

[00:47:03.609]
AS A MATTER OF FACT, WHEN A TORNADO
SPINS, IT CAN PICK UP DEBRIS,

[00:47:06.949]
AND THE WIND CAN MOVE
IT HUNDREDS OF MILES.

[00:47:10.169]
WOW!

[00:47:10.539]
I DIDN'T KNOW WEATHER
WAS THIS COMPLICATED.

[00:47:12.629]
HERE, I'LL GIVE YOU
THE WIND DIRECTION

[00:47:14.059]
FOR EACH DAY THIS WEEK,
THAT MIGHT HELP YOU.

[00:47:15.809]
COOL, LETS TAKE THESE
BACK TO DR. D'S LAB.

[00:47:19.349]
WE CAN FIND THE WIND
DIRECTION AND TRACK THE SMELL.

[00:47:22.319]
WE'LL HAVE TO STUDY THEM.

[00:47:23.559]
THAT SOUNDS LIKE MORE WORK.

[00:47:25.359]
AND I THOUGHT WE WERE ALMOST THERE.

[00:47:28.069]
THANKS A LOT.

[00:47:28.619]
THIS IS A REALY NEAT PLACE.

[00:47:30.009]
MAYBE WE CAN COME BACK SOMETIME?

[00:47:31.519]
ANYTIME.

[00:47:32.349]
I'LL SEE YOU GUYS LATER.

[00:47:33.439]
WATCH FOR US ON KSNN.

[00:47:35.109]
I'LL BE TUNING IN.

[00:47:37.589]
SEE YOU LATER.

[00:47:38.589]
HI, DR. D!

[00:47:41.879]
HI.

[00:47:42.789]
WHAT DO YOU HAVE IN YOUR HANDS?

[00:47:44.409]
THEY'RE OFFICIAL WEATHER
MAPS FROM CRAIG MOELLER.

[00:47:47.879]
THE WEATHER MAN?

[00:47:48.599]
YES, THE METEOROLOGIST.

[00:47:49.919]
BERNIE AND GERONIMO
RECOGNIZED THE NAME.

[00:47:52.899]
WE NOW KNOW WHO SMELLED
THE STINK EACH DAY.

[00:47:55.819]
AND MAYBE NOW WITH THE WIND
DIRECTION, WE MIGHT BE ABLE

[00:47:59.909]
TO FIGURE OUT THE SOURCE.

[00:48:01.399]
ARG!

[00:48:02.419]
I'M SO CONFUSED.

[00:48:03.239]
HOW IN THE WORLD DO
WE MAKE SENSE OF THIS?

[00:48:07.059]
I'D SUGGEST YOU PUT ALL YOUR
INFORMATION IN A CHART FORM,

[00:48:09.909]
WHAT WE CALL A MATRIX.

[00:48:11.419]
IT MAY HELP YOU ORGANIZE
ALL THIS INFORMATION.

[00:48:14.109]
I'VE ALREADY MADE A MATRIX.

[00:48:17.319]
IT HAS THE DAYS OF THE
WEEK ACROSS THE TOP,

[00:48:19.539]
AND THE FOUR CITIES DOWN THE SIDE.

[00:48:21.519]
YOUR JOB IS TO MARK WHEN EACH
CITY SMELLED THE STINK EACH DAY.

[00:48:26.459]
LATER, YOU CAN COMPARE THE WIND
DIRECTION ON EACH DAY TO YOUR CHART

[00:48:30.819]
AND TO THE MAP YOU'VE ALREADY
MADE TO SEE WHAT IT MIGHT MEAN.

[00:48:33.899]
OH, COOL.

[00:48:34.429]
I THINK THIS'LL REALLY HELP US.

[00:48:35.759]
LET'S GO BACK TO THE TREE
HOUSE AND TRY IT OUT.

[00:48:39.479]
THANKS, DR. D. BYE.

[00:48:43.539]
I'LL LET YOU IN ON A SECRET.

[00:48:45.179]
I THINK THEY MAY BE
ON TO SOMETHING.

[00:48:47.059]
LET'S NOT WASTE ANY TIME.

[00:48:49.019]
LET'S GET DOWN TO BUSINESS.

[00:48:51.309]
SET UP THAT, UMM-- THAT MATRIX.

[00:48:53.479]
WHATEVER.

[00:48:54.609]
WHO SMELLED THE STINK ON MONDAY?

[00:48:57.209]
LOOKING AT OUR E-MAIL,
ONLY PHEWSVILLE.

[00:48:59.249]
AND ON TUESDAY?

[00:49:01.009]
NO ONE.

[00:49:01.719]
WHAT ABOUT WEDNESDAY?

[00:49:03.459]
ON WEDNESDAY, EXVILLE
SMELLED IT A LITTLE BIT,

[00:49:06.449]
BUT PHEWSVILLE GOT HIT HARD.

[00:49:08.689]
AND ON THURSDAY, ALL THE CITIES
SMELLED IT, BUT ALL OF US

[00:49:11.729]
IN BIG CITY REALLY GOT HIT.

[00:49:14.689]
YEAH, MAN, WE WERE PLUGGING
OUR NOSES BIG-TIME YESTERDAY.

[00:49:18.329]
TODAY EXVILLE SMELLED IT A LITTLE,
BUT PHEWSVILLE GOT HIT AGAIN.

[00:49:22.669]
SO WHAT DOES THIS ALL MEAN?

[00:49:24.629]
WE SHOULD GO TO THE MAP AND
SEE HOW WIND DIRECTION RELATES

[00:49:32.249]
TO OUR INFORMATION.

[00:49:36.019]
LET'S GO.

[00:49:36.269]
MONDAY THE WIND WAS
COMING FROM THE NORTH.

[00:49:38.549]
AND PHEWSVILLE REALLY
SMELLED THE STINK.

[00:49:40.629]
THE SOURCE COULD BE UP HERE.

[00:49:42.479]
MAYBE THE TRASH BURNING
PLACE OR THE PAPER MILL.

[00:49:46.749]
MAYBEY, BUT ON TUESDAY, THE WIND
WAS STILL COMING FROM THE NORTH,

[00:49:49.339]
AND NOBODY SMELLED IT.

[00:49:50.999]
WEDNESDAY, THE WIND AGAIN
WAS COMING FROM THE NORTH.

[00:49:54.749]
PHEWSVILLE GOT HIT BAD,
AND EXVILLE JUST A LITTLE.

[00:49:59.099]
SO THEN THE SOURCE
WILL BE ACROSS FROM US.

[00:50:02.239]
AND ON THE MAP, THAT'S
THE TRASH BURNING PLANT.

[00:50:06.139]
ON THURSDAY, EVERYBODY
SMELLED THE STINK

[00:50:08.369]
AND THE WIND CHANGED DIRECTION.

[00:50:09.879]
IT CAME FROM THE WEST.

[00:50:12.259]
BUT THAT WAS WORSE FOR US.

[00:50:13.969]
REMEMBER THAT EXPERIMENT WE DID
IN CLASS WHEN EVERYONE IN FRONT

[00:50:18.369]
OF THE FAN GOT BLASTED?

[00:50:21.289]
MAYBE BIG CITY IS RIGHT
IN THE PATH OF THE STINK.

[00:50:25.259]
THE SOURCE HAS TO BE WHERE THESE
TWO CROSS, RIGHT AROUND EXVILLE.

[00:50:29.779]
MY HYPOTHESIS IS THE
TRASH BURNING PLACE.

[00:50:32.479]
IT'S HAS TO BE THE SOURCE.

[00:50:33.499]
BUT IT'S SO FAR AWAY FROM BIG CITY.

[00:50:35.709]
CAN THE WIND MOVE A SMELL THAT FAR?

[00:50:39.119]
UH-HUH.

[00:50:40.899]
UH-HUH.

[00:50:42.169]
THANKS, DR. D. I REALLY
APPRECIATE IT.

[00:50:44.699]
BYE.

[00:50:45.409]
DR. D SAYS YOU WOULD BE
SURPRISED HOW FAR FIRES,

[00:50:50.069]
POLLUTIONS, AND SMELL CAN TRAVEL.

[00:50:52.759]
HE SUGGESTS THAT WE TALK
TO A FRIEND OF HIS AT NASA

[00:50:56.299]
WHO SPECIALIZES IN
THAT KIND OF THING.

[00:50:59.589]
OKAY.

[00:50:59.939]
THAT'S IT THEN.

[00:51:00.779]
IT'S THE TRASH BURNING PLANT.

[00:51:02.279]
LET'S CALL KSNN.

[00:51:03.869]
WATCH ME ON THE NEWS.

[00:51:05.319]
I DON'T WANT TO EMBARRASS MYSELF
IN FRONT OF ALL OF MY FRIENDS.

[00:51:08.219]
WE BETTER BE RIGHT.

[00:51:09.069]
WE DON'T EVEN KNOW HOW
FAR SMELL CAN TRAVEL.

[00:51:10.739]
I STILL THINK WE SHOULD TALK TO
DR. D'S FRIEND JUST TO BE SAFE.

[00:51:16.969]
WE CAN STOP BY NASA TOMORROW
BEFORE WE GO TO KSNN.

[00:51:20.259]
LET'S GO.

[00:51:21.639]
AN ALERT FOR EXVILLE TODAY.

[00:51:25.969]
IT APPEARS TO BE THE ONLY
CITY UNDER STINK SIEGE.

[00:51:29.919]
WHICH DIRECTION IS
THE WIND BLOWING?

[00:51:32.099]
FROM THE SOUTH.

[00:51:33.489]
AND DR. D SAYS HE'LL
PICK US UP FROM NASA.

[00:51:36.519]
"FROM THE SOUTH"?

[00:51:37.639]
WHAT?

[00:51:38.539]
COME ON.

[00:51:42.119]
LET'S GET-- WE KNOW.

[00:51:45.579]
"GET UP AND GO."

[00:51:49.939]
DR. JACK FISHMAN.

[00:51:50.999]
THAT'S HIS NAME.

[00:51:52.029]
WE'RE SUPPOSED TO MEET HIM HERE.

[00:51:53.489]
HEY, THERE HE IS.

[00:51:55.509]
HI, I'M BIANCA.

[00:51:56.909]
AND THIS IS JACOB AND MATTHEW.

[00:51:58.859]
HI, GUYS.

[00:51:59.919]
I'M JACK FISHMAN.

[00:52:01.069]
I WORK AT NASA LANGLEY
RESEARCH CENTER

[00:52:02.789]
IN THE ATMOSPHERIC
SCIENCES DEPARTMENT.

[00:52:04.489]
IS THERE ANYTHING I
CAN HELP YOU WITH?

[00:52:06.839]
WE WERE WONDERING IF SMELL COULD
TRAVEL FROM EXVILLE TO BIG CITY?

[00:52:11.209]
THAT'S THE RESEARCH AREA I'VE
BEEN DOING FOR A LONG TIME.

[00:52:14.389]
I MIGHT BE ABLE TO HAVE
SOME ANSWERS FOR YOU.

[00:52:18.299]
COME ON OVER TO THE LABORATORY.

[00:52:22.009]
LET ME SHOW YOU SOME STUFF.

[00:52:23.069]
HOW FAR DO SMELLY THINGS TRAVEL?

[00:52:26.369]
YOU WOULD REALLY BE SURPRISED.

[00:52:27.589]
HERE AT NASA LANGLEY, WE HAVE
SPECIAL INSTRUMENTS WE PUT

[00:52:30.159]
ON AIRPLANES AND SATELLITES TO
TRACK THESE SMELLY MOLECULES.

[00:52:34.199]
HOW FAR DO YOU THINK
THEY CAN TRAVEL?

[00:52:35.749]
HUNDREDS OF MILES?

[00:52:36.739]
FROM HERE TO TENNESSEE.

[00:52:37.889]
FROM HERE TO CALIFORNIA?

[00:52:38.949]
YOU WOULD BE SURPRISED.

[00:52:40.939]
AT ONE POINT, WE ACTUALLY TOOK
MEASUREMENTS OF FIRES IN AFRICA

[00:52:44.259]
AND SOUTH AMERICA AND WERE
ABLE TO TRACK THE CHEMICALS

[00:52:47.049]
IN THE SMOKE HUNDREDS AND
HUNDREDS OF MILES OFF THE COAST.

[00:52:51.329]
FAR AWAY FROM THE FIRES,
COULD YOU STILL SMELL THEM?

[00:52:53.949]
THE SMOKE WAS LESS DENSE
AND NOT EVEN VISIBLE.

[00:52:56.919]
BUT WITH OUR SPECIAL INSTRUMENTS,
WE COULD TELL THE SMOKE WAS

[00:52:59.589]
IN THE AIR AND THE SMELLY
MOLOCULES WERE PRESENT.

[00:53:02.889]
INSTRUMENTS ON SATELLITES ARE ABLE
TO SEE THE SMOKE TRAVEL ALL THE WAY

[00:53:09.059]
FROM SOUTH AMERICA, ALL
THE WAY AROUND THE WORLD,

[00:53:11.699]
PAST THE PACIFIC OCEAN.

[00:53:12.999]
WILL THEY DISAPPEAR?

[00:53:14.339]
THEY'LL REACT WITH ANOTHER MOLECULE
TO MAKE A LESS SMELLY MOLECULE.

[00:53:19.479]
THESE MOLECULES MAY GET
WASHED OUT BY THE RAINFALL.

[00:53:22.879]
AND, YES, THEY DISAPPEAR.

[00:53:24.409]
WOW.

[00:53:25.119]
I GUESS SMELL REALLY CAN TRAVEL.

[00:53:27.919]
WE BETTER GO BACK TO
SEE IF WE'RE RIGHT.

[00:53:30.589]
HEY, THERE'S DR. D. LET'S GO.

[00:53:32.069]
THANKS FOR ALL YOUR HELP.

[00:53:34.529]
BYE.

[00:53:34.749]
BYE, GUYS.

[00:53:35.699]
IT CAN'T BE THE TRASH
BURNING PLACE.

[00:53:39.259]
WE'RE NOWHERE NEAR IT.

[00:53:40.459]
WE'RE SOUTH OF EXVILLE, AND
THE STINK IS FROM THE SOUTH.

[00:53:43.869]
EXCEPT THE CANDY FACTORY.

[00:53:45.629]
THAT'S NOT ON THE MAP.

[00:53:47.589]
OH, THAT'S RIGHT.

[00:53:48.449]
BECAUSE IT'S NEW.

[00:53:49.679