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Hi, I'm Bianca, and this is Jacob and Matthew.

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Hi guys, I'm Jack Fishman, and I work at NASA Langley Research Center in the Atmospheric Sciences Department.

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Is there anything I can help you with?

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We have one question.

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We were wondering if smell could travel all the way from Exville to Big City.

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Well, you know, that's a research area I've been doing for a long time,

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and I might just be able to have some answers for you.

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Come on over to the laboratory and let me show you some stuff.

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Okay, cool.

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How far do smelly things travel?

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Well, you would really be surprised.

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Here at NASA Langley, in our Atmospheric Sciences Research Program,

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we have special instruments we put on both airplanes and even on satellites to track these smelly molecules.

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How far do you think they can travel?

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Hundreds of miles?

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From here to Tennessee?

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From here to California?

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Well, you'd be surprised.

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At one point, we actually took measurements of fires in Africa and South America,

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and we were able to track the chemicals in the smoke hundreds and hundreds of miles off the coast.

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Even when you were so far away from the fires, could you still smell them?

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The smoke was certainly less dense and not even visible,

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but with our special instruments, we could still tell that smoke was in the air and that smelly molecules were present.

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And let me tell you something else.

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We fly instruments on satellites that are able to see the smoke and these smelly molecules travel

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all the way from South America all the way around the world past the Pacific Ocean.

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Will they ever disappear?

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Well, actually, yes.

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Eventually, they'll react with another molecule to make a less smelly molecule.

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These molecules, in turn, may get washed out by the rainfall.

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And yes, they disappear.

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Wow. I guess the answer is yes.

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Smell really can travel.

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I guess we'd better go back to see if we're right.

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Hey, there's Dr. V. Let's go.

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Thanks for all your help. Bye.

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Bye, guys.

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Bye.