The scientific community has long accepted the theory that an asteroid that hit the earth was the cause for the demise of the dinosaurs. But a more recent competing theory has emerged. Perhaps it was volcanic activity. Once that debate arises you have to look at the possibility that maybe it’s both. And maybe the asteroid triggered the volcanic activity.
It’s rarely either/or.
A fascinating opinion piece in the New York Times discusses all this:
The Death of the Dinosaurs
Good reading. Enjoy!