How low did it go? Scientists calculate Earth’s Ice Age temperatures
The Arctic was especially cold — but parts of Alaska were ice-free and relatively hospitable.
September 1, 2020
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WASHINGTON — Guided by ocean plankton fossils and climate models, scientists have calculated just how cold it got on Earth during the depths of the last Ice Age, when immense ice sheets covered large parts of North America, South America, Europe and Asia.
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