For years, paleontologists have disagreed over whether birds from the Cretaceous period went out with a whimper — dying out gradually over the course of millions of years — or with a bang — getting wiped out by the same mass extinction event that is believed to have killed off Earth's most recent (and final) wave of…
We're almost certain that a giant meteor hit Earth 65 million years ago. But a mysterious "three-meter gap" in the fossil record might mean dinosaurs were already dying off. Now a newly discovered fossil might finally reveal the whole story.
Princeton geoscientist Gerta Keller has new evidence to support her alternative theory that volcanoes, not meteorites, wiped out the dinosaurs. Indeed, the evidence is so compelling that we might be dropping the whole "alternative" part.