From all available evidence no black man had ever set foot in this tiny Swiss village before I came. I was told before arriving that I would probably be a “sight” for the village; I took this to mean ...

From messages sent to NASA’s “Ask an Astrobiologist” Web page. David Morrison, who responds to the questions, has received more than 5,000 messages related to “Doomsday 2012” and the planet… ...