Another preliminary: the image that appears above, and on the cover of the book, needs explaining. It’s the Ivy Mike nuclear test shot, the first thermonuclear explosion. Mike and its successors left a tracery of plutonium-239 in sediment layers around the world, and for a mass of reasons that I discuss in the book, I think that that spike in plutonium levels might be the most appropriate symbolic marker for the beginning of the Anthropocene epoch.
Ivy Mike was detonated on a Pacific coral atoll on the morning of Saturday November 1, 1952 (local time; for most of the world it was still October). The transition between any two geological epochs is of course a lengthy process, but 1952, the first year of the H-bomb era, might be a good point at which to fix the nominal end of the Holocene epoch and the equally nominal beginning of the Anthropocene epoch. Alternatively, the switch-over could be located with even more specificity at the very moment of the Ivy Mike explosion. That moment is an emblematic one and nothing more, of course. But what an emblem! Continue reading “November 1, 1952”