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now when I was a little kid I had a

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career list and it was astronaut

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biologists and geologists so far I've

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I was always very interested in viruses

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I started getting interested in DNA and

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viruses when I was about 16 and was

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working in public health we were

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studying HIV integrase and trying to

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come up with some treatments for HIV

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that led to PhD at Stanford where I was

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looking at viruses such as monkey pox

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and smallpox and Ebola

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Marburg and Lassa fever and there are

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some of our most deadly viruses so we

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have incredibly specialized labs to

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contain those biosafety level 4 labs we

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also did field work in Africa looking at

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outbreaks so we went to Congo and set up

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a small field research site there in

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order to be able to treat these patients

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and to understand how the virus was

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emerging in these populations I've

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always been interested in DNA

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and in physiological responses at the

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cellular and the molecular level so at

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the cellular level I think that's one of

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the most exciting things for me on space

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station is to take a look at all these

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processes and how they're influenced by

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the lack of gravity do you know if you

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look at human evolution in history we

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have always been exploring and we've

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always been observing our world which is

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really what scientists do and so I think

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it's absolutely the next step to push

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forward and to see where we're going in

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our exploration of the solar system I'm

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just pretty excited to be flying on ISS

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and to be a really small part of that