In ancient oceans that resembled our own, oxygen loss triggered mass extinction
Thursday, March 28, 2019 - 10:12
in Earth & Climate
Roughly 430 million years ago, during the Earth’s Silurian Period, global oceans were experiencing changes that would seem eerily familiar today. Melting polar ice sheets meant sea levels were steadily rising, and ocean oxygen was falling fast around the world. At around the same time, a global die-off known among scientists as the Ireviken extinction […]