Today most scientists accept that a large asteroid impact killed the dinosaurs 65 million years ago. But this was not always the case. For decades, experts felt the cause of dinosaur extinction to be a mystery. Watch the clues unfold as a ...See moreToday most scientists accept that a large asteroid impact killed the dinosaurs 65 million years ago. But this was not always the case. For decades, experts felt the cause of dinosaur extinction to be a mystery. Watch the clues unfold as a talented group scientists chase the first lead, and the idea develops which we now accept today. Regarded by many as one of the most important dinosaur discoveries ever, and one of the best NOVA episodes of the eighties.
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