A young paleontologist may have discovered a record of the most significant event in the history of life on Earth.
"It was completely out of place, like finding a kangaroo in Scotland. Africa was completely isolated by water—so how did they get there?"
Researchers believe they have closed the case of what killed the dinosaurs, definitively linking their extinction with an asteroid that slammed into Earth 66 million years ago by finding a key piece of evidence: asteroid dust inside the impact crater.
