Dave WilliamsDr. Dave Williams is an astronaut, aquanaut, jet pilot, ER doctor, scientist, CEO, and bestselling author. The former director of Space & Life Sciences at NASA's Johnson Space Center, he has flown in space twice. He holds the Canadian spacewalking reord and was the first Canadian to live on the world's only undersea research habitat. He is the recipient of six honorary degrees, the Order of Canada, and the Order of Ontario. He lives in Toronto, Ontario. Read More Read Less