Travel back 66 million years ago when a meteor struck the Earth, wiping out three-quarters of all life on the planet. What happened in those first hours? Why did some creatures survive while nearly all others perished? Using computer graphics and real-world recreations, National Geographic reveals the likely effects of the catastrophic impact that changed the world forever and examines who won, who lost, and why.

• DirectorJonathan Halperin
• Release24 November 2009
• GenreDocumentary
• Duration0h 50m
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  National Geographic