Two hundred and fifty million years ago, a colossal volcanic event in present-day Siberia unleashed lava flows a mile deep across a region as vast as Texas. This triggered catastrophic climate upheaval, wiping out 95% of Earth's life. The near-total extinction cleared the stage for a new ruling class: the dinosaurs.
Show
How the Earth Was Made
Episode
S02E11
Air Date
Feb 09, 2010