How should we mark the beginning of this new stage in the life of our Earth?Ī new study suggests that the Trinity test, the first demonstration of a nuclear weapon, should mark the death of the previous epoch, the Holocene, and beginning of the new one, the Anthropocene. It is said that we now live in a new epoch, the Anthropocene, in which geology and climate are controlled as much by human activity as anything else. They alter it, on an increasingly epic scale. Human beings don’t merely inhabit the world.