Earth's Chemistry Wobbled During Its 5 Biggest Mass Extinctions
2026-08-16T15:30:01.000Z Life on Earth, beginning with simple microorganisms that evolved and diversified into the incredible breadth of species living today, has always been turbulent. But it's not just disasters like supervolcanoes and asteroid impacts that cause mass extinction. Read on below – and follow ScienceAlert for news that sparks your curiosity.