Ice Ages, Human Origins, and the Invention of the Pleistocene, by Lydia V. Pyne and Stephen J. Pyne
The Pleistocene epoch — lasting from 2.6 million to about 10,000 to 12,000 years ago — was an exciting time: Continent-sized ice sheets advanced and retreated multiple times, and several varieties of humans inhabited Earth. During warm interglacial episodes, hyenas and hippos lived as far north as England; in colder periods, exotic species rendered Europe, in the words of this father-daughter writing team, “a woolly Serengeti on steroids.”
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