24 Hours After: Asteroid Impact

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.

• Director: Jonathan Halperin
• Cast: Peter Coyote, Dan Durda, Kirk Johnson, Douglas S. Robertson, Peter H. Schultz