Life Speeds Up—Oxygen and Climate Swings
Lecture no. 42 from the course: The Origin and Evolution of Earth: From the Big Bang to the Future of Human Existence
Taught by Professor Robert M. Hazen | 30 min | Categories: The Great Courses Plus Online Science Course
Focus on the second half of the Paleozoic, between 400 and 250 million years ago, when oxygen reached its highest levels ever. Terrestrial vertebrates emerged and life went through many crisis points, with repeated episodes of extinction followed by intervals of evolutionary novelty.