The things that nobody knows

HERE ARE MANY, MANY THINGS THAT NOBODY KNOWS . . . Why are so many giraffes gay? Has human evolution stopped? Where did our alphabet come from? Can robots become self-aware? Can lobsters recognize other lobsters by sight? What goes on inside a black hole? Are cell phones bad for us? Why can't we remember anything from our earliest years? Full of the mysteries of life, the universe and everything, The Things that Nobody Knows is a fascinating and unputdownable exploration of the limits of human knowledge of our planet, its history and culture, and the universe beyond.