Elizabeth Kolbert on why some leading geologists reject the “Anthropocene,” a term used by scientists to describe this new age in which humans shape the Earth.
“I can only conclude that mankind has been extremely lucky,” Crutzen said. At the I.G.B.P. meeting in Cuernavaca, Crutzen found himself growing agitated. His colleagues kept referring to the Holocene, the geological epoch that began at the close of the last ice age, about twelve thousand years ago. At the dawn of the Holocene, the global population was maybe four million—barely enough to fill a city like Sydney or St. Petersburg.
As a result of this and other unusual qualities, everything that falls into the lake, from pollen grains to radioactive particles, gets preserved in layers of sediment that can be very precisely dated. The idea was to designate the base of the Anthropocene as the layer of Crawford Lake sediment laid down in 1952—and, more specifically, as the 1952 layer preserved in one particular core kept in a freezer in Quebec.
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