From tortoiseshell condoms to superstar athletes on hallucinogens, these burning questions are explored and dissected, mixed with insights from some of the world's bravest, cleverest and downright weirdest scientists experimenting on the edge - and themselves. Along the way we find big questions about consciousness, happiness and humanity in the strange hedonistic recesses of research. Without our most insatiable drives, science and the world would be very different. ..."--Back cover.