you're the host of nova science now. and you write books, and you dance, too. >> i once danced. not much anymore. that was an earlier chapter in my life. and odd that you would mention my ethnicity there. and i say that because i once thought about that. and i realized that i may be the most visible scientist of any discipline, of any ethnicity, of any skin color, in america today. and the reason why i went through that mental exercise was because there i am trying to bring the frontier of science to the public, and i said, "i don't want to do that alone. i want some others there with me." and i looked around to see who's there with me. you know, do we have a geologist there with me, and a biologist? and there are a few that are known-- you know, e .l. wilson and brian greene and michio kaku. but given the size of that science frontier, we need many more. and so i'm disappointed that i'm sitting there alone with that kind of distinction. >> hinojosa: so when i was growing up, the most famous scientist was carl sagan. >> yeah. oh, yeah. >> hinojosa: and you actually got a chance