Dino-dooming asteroid impact created a chilling sulfur cloud
New, more precise calculations help re-create how the collision affected Earth’s climate
![meteorite impact](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/11/110117_lh_dino-doom-brief_feat.jpg?fit=860%2C460&ssl=1)
IT’S A GAS When a massive meteorite slammed into Earth 66 million years ago, it vaporized rocks, sending up enough climate-changing gases to spark mass extinction.
NASA