another story, keay. >> stephen: keay. keay davidson and he started the column keay davidson the "science guy." i talked to him on the phone and i said, mr. davidson, it doesn't rhyme. he said, that's good. so i stuck with it, bill nye the "science guy." i'm a check cal engineer. >> stephen: there is chatter on the internet you're bill nye the engineering guy. >> for four years, it's physics! ( cheers and applause ) i'm sorry, i took six semesters of calculus. is that enough? >> stephen: you're also c.e.o. of the planetary society. >> yes. >> stephen: working on something called -- which is by carl sagan. >> i took one class from carl sagan. my father was the amateur astronomer. carl sagan talked about solar sailing back during the disco era, and, so, i joined the planetary society when it was started. one thing led to another. you know neil de grasse tyson. >> stephen: i do. neil is very into wine. >> stephen: yeah. and there was a meeting of the board of directors, and something happened, and now i'm the c.e.o. of the pl

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