Regan E. Dunn

(She/Her)

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Tree canopy like in this Wyoming forest affects stream flow, the climate and life on land. Elyna Grapstein/BLM

Ancient forests took 100,000 years to recover from the last global warming period similar to today – Wyoming fossils reveal what happened

Regan E. Dunn, USC Dornsife College of Letters, Arts and Sciences

Understanding what happened in these forests 56 million years ago may help humanity recognize similar thresholds before we cross them again, the lead author of a new study writes.
The fossil deposits at the La Brea Tar Pits in Los Angeles have well-preserved remains of many prehistoric animals that got stuck in natural asphalt seeps over the past 60,000 years. Cullen Townsend, courtesy of NHMLAC

A changing climate, growing human populations and widespread fires contributed to the last major extinction event − can we prevent another?

Emily Lindsey, University of California, Los Angeles; Lisa N. Martinez, University of California, Los Angeles, and Regan E. Dunn, USC Dornsife College of Letters, Arts and Sciences

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.

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