A changing climate, growing human populations and widespread fires contributed to the last major extinction event − can we prevent another?
New findings from the La Brea Tar Pits in southern California suggest human-caused wildfires in the region, along with a warming climate, led to the loss of most of the area’s large mammals.
Regan E. Dunn, Adjunct Professor of Earth Sciences, USC Dornsife College of Letters, Arts and Sciences •
conversation
Aug. 17, 2023 • ~8 min
Aug. 17, 2023 • ~8 min
Rising methane could be a sign that Earth's climate is part-way through a 'termination-level transition'
The last time methane in the air rose so fast, Greenland warmed by 10°C within decades.
Euan Nisbet, Professor of Earth Sciences, Royal Holloway University of London •
conversation
Aug. 14, 2023 • ~9 min
Aug. 14, 2023 • ~9 min
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
July 21, 2023 • ~7 min
When Greenland was green: Ancient soil from beneath a mile of ice offers warnings for the future
Knowing Greenland’s ice-free history offers a warning for the future as global temperatures rise.
Tammy Rittenour, Professor of Geosciences and Director of Luminescence Lab, Utah State University •
conversation
July 20, 2023 • ~10 min
July 20, 2023 • ~10 min
Forensic evidence suggests Paleo-Americans hunted mastodons, mammoths and other megafauna in eastern North America 13,000 years ago
A forensic technique more often used at modern crime scenes identified blood residue from large extinct animals on spearpoints and stone tools used by people who lived in the Carolinas millennia ago.
Christopher R. Moore, Research Professor at the South Carolina Institute for Archaeology and Anthropology, University of South Carolina •
conversation
June 14, 2023 • ~9 min
June 14, 2023 • ~9 min
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