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 ...