![](https://thomassumner.com/wp-content/uploads/2016/10/092816_TS_PETM_main.jpg)
Glass bits, charcoal hint at 56-million-year-old space rock impact
Science News, September 2016A period of skyrocketing global temperatures started with a bang, new research suggests.
A period of skyrocketing global temperatures started with a bang, new research suggests.