Extinction of the Dinosaurs: a new theory

This is a video about what we talked about in 5B's class: a new theory about what happened after an enormous meteorite hit the Earth, millions of years ago.
(We were talking about a "loss of biodiversity" in class: When the dinosaurs died, there was a very BIG loss of biodiversity!)

This video is from a science show called "Radiolab". Usually, it's on the radio. But this is their Live Show, which they did for an audience.