Kind: captions Language: en The end of dinosaurs. "The most important event in the last 100 million years." Now, an extraordinary expedition… "At ground zero, investigating how this event led to such mass extinction." …reveals an unimaginable global chain reaction. "The atmosphere was emitting energy larger than the Sun." "I think we're toast." And its aftermath… "It's important to look at what survived." The day the dinosaurs died, on NOVA.