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Why do some leading geologists reject the term "Anthropocene"?

Scientists, journalists, and artists often say that we live in the Anthropocene, a new age in which humans shape the Earth. Why do some leading geologists reject the term?

The golden spike for the start of the Triassic period, for example, is a layer of rock found in Meishan, China, and the shift it records is a mass extinction that killed off something like ninety per cent of all species on Earth. Kim Cohen, a Dutch geologist who, at fifty, is one of the younger members of the Subcommission on Quaternary Stratigraphy and who cast a “yes” vote for the new epoch, told me that he expects to see the Anthropocene added to the geological timescale within his life. As Paul Crutzen pointed out in 2002, barring a “meteorite impact, a world war or a pandemic,” humans “will remain a major environmental force for many millennia.” Science recently summed up the situation this way: “ The Anthropocene is dead.

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