Explore the major causes of mass extinction events in Earth's history in this comprehensive 25-minute video. Delve into the top three triggers: global warming, CO2 increase with associated ocean acidification, and ocean anoxia. Learn how global warming induces thermal stress on animals, CO2 increase leads to potentially lethal hypercapnia, and ocean anoxia depletes vital oxygen for marine life. Discover the interconnected nature of these phenomena and their devastating effects on Earth's biodiversity during mass extinction events. Gain insights into additional causes, examine specific examples from Earth's past, and understand the complex mechanisms behind these planetary-scale catastrophes.