Earth's Mass Extinctions

Explore the controversial "Medea Hypothesis" in this thought-provoking TED talk by author Peter Ward, who challenges the common belief that asteroid strikes are the primary cause of Earth's mass extinctions. Discover how lowly bacteria producing hydrogen sulfide may have played a more significant role in these catastrophic events throughout our planet's history. Learn about the potential medical applications of this deadly poison and gain insights into the complex interplay between microbial life and global extinctions. Delve into this fascinating 22-minute presentation that offers a fresh perspective on Earth's past and future ecological challenges.