While humans have gotten pretty good at destroying the Earth, nothing we’ve ever made has had the destructive force of the Cretaceous-Paleogene (K-PG) extinction event. Some 65 million years ago, three-fourths of all plant and animal life on Earth was suddenly made extinct, altering the course of the planet’s evolution. In September 2019, in a bit of CSI: Entire Planet, scientists got the most-detailed look yet at what happened in the aftermath of the K-PG event, reconstructing precisely how the Age of Dinosaurs came to a swift, fiery end.

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