In the seventy thousand years that modern human beings have walked this earth, we've come a long way. Art, science, culture, trade on the evolutionary food chain, we're real winners. But, frankly, it's not exactly been plain sailing, and sometimes just occasionally we've managed to really, truly, quite unbelievably f**k things up. From Chairman Mao's Four Pests Campaign, to the sinking of the Titanic, from the American Dustbowl, to the world's leading superpower electing a reality TV mogul as President, it's pretty safe to say that, as a species, we haven't exactly grown wiser with age.