Science in a Minute 02020 Did Volcanoes or A Giant Asteroid Kill the Dinosaurs

There has been spirited debate as to what caused dinosaurs to become extinct. Was it rapid climate change due to extensive volcanic activity or was it due to a giant asteroid that crashed into Mexico 66 million years ago? A new Yale study provides evidence that the death of the dinosaurs must have been caused by the asteroid strike since volcanic caused climate change happened 200,000 years earlier.