Share '4/28: VPL Astrobiology Colloquium presents Dr. Tim Lyon'
The Rise (And Fall) of Oxygen in Earth’s Oceans and Atmosphere and the Co-Evolution of Early Life
Presenter: Timothy Lyons, University of California, Riverside When: April 28, 2015 3PM PDT
The oldest signs of animal life appear in the geologic record 600 to 700 million years ago. For the four billion years prior, our planet experienced dramatic changes that paved the way for this milestone…
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