Is it really hotter now than any time in 100,000 years?

Long before thermometers, nature left its own temperature records. A climate scientist explains how ongoing global warming compares with ancient temperatures.

Darrell Kaufman, Professor of Earth and Environmental Sciences, Northern Arizona University • conversation
July 21, 2023 • ~7 min

Turbulent environment set the stage for leaps in human evolution and technology 320,000 years ago

A new environmental record for a prehistoric site in Kenya helped researchers figure out how external conditions influenced which of our ancient ancestors lived there, with what way of life.

Richard Potts, Director of the Human Origins Program, Smithsonian Institution • conversation
Oct. 21, 2020 • ~11 min

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