That means the ruthenium found in the K-Pg layer came from the same meteorite that hit Chicxulub. How does this tie into the theory that an asteroid killed the dinosaurs? As the theory goes ...

The scientists therefore conclude that the meteorite impact was the ultimate cause of the dinosaur extinction event. The study is published in the journal Science Advances. The meteorite impact in ...

But these events happened millennia before the meteorite impact and probably played only a small part in the extinction of dinosaurs," explains study author Lauren O'Connor, a geochemist at ...