On Cool Science Radio, Dave and John’s first guest is Dr. One Pagan who has written Strange Survivors...How organisms attack and defend in the game of life. In Strange Survivors , biologist One Pagan takes us on a tour of the improbable, the ingenious, and the just plain bizarre ways that creatures fight for life. Dave and John's second guest is Michael Horkachuck. Michael and his group at NASA are working towards certification of SpaceX’s Crew Dragon that will allow SpaceX to fly manned