LEILA FADEL, HOST:
Good morning. I'm Leila Fadel. For decades, there's been a debate over whether an asteroid or volcanic eruptions killed off the dinosaurs. Now, one group of scientists have decided to let a computer settle this. The analysis from Dartmouth College was designed to remove human bias. It found that volcanic activity in what's now modern-day India produced enough toxic gas to end the reign of the T-Rex and its brethren long before a huge meteor struck Earth. But do we trust the computer? It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.