Why can t we tickle ourselves? When can you drive through the end of a rainbow? What would happen if you fell into a black hole? Is it ever possible to hurt your brain by thinking too much? Most of the great discoveries in science begin with a question. In this bestselling scientific tour of answers both cosmic and quotidian, science columnist and researcher Robert Matthews tackles an array of baffling conundrums, delivering entertaining and enlightening answers from the worlds of biology, physics, meteorology, neuroscience, and much more. From the curious mathematics of odd socks to the real...