Danish and Swedish researchers have dated the enormous Hiawatha impact crater, a 31 km-wide meteorite crater buried under a kilometer of Greenlandic ice. The dating ends speculation that the meteorite impacted after the appearance of humans and opens up a new understanding of Earth’s evolution in the post-dinosaur era.
Click here for original story, Giant impact crater in Greenland occurred a few million years after dinosaurs went extinct
Source: Phys.org