Oxygen depletion in ancient oceans caused major mass extinctionhttps://www.sciencedaily.com/releases/2019/08/190830150801.htm #climatechange #climatecrisis #extinction
Librem Social is an opt-in public network. Messages are shared under Creative Commons BY-SA 4.0 license terms. Policy. Stay safe. Please abide by our code of conduct. (Source code)