When significant oxygen entered the atmosphere, ancient life multiplied. But after a few hundred million years, Earth’s oxygen plummeted, resulting in a die-off likely greater than the extinction of the dinosaurs.
Stanford Earth's David Lobell, Rob Jackson, Erik Sperling, Dustin Schroeder, Sally Benson, Roz Naylor, Michael Machala, Rosemary Knight and Kate Maher have received funding for interdisciplinary research to solve major environmental problems.
Why did the first big, complex organisms spring to life in deep, dark oceans where food was scarce? A new study finds great depths provided a stable, life-sustaining refuge from wild temperature swings in the shallows.
Scientists have debated until now what made Earth's oceans so inhospitable to life that some 96 percent of marine species died off at the end of the Permian period. New research shows the "Great Dying" was caused by global warming that left ocean animals unable to breathe.