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Angkor: Hidden Jungle Empire
New evidence sheds light on the remarkable life—and mysterious collapse—of the ancient jungle city.
NOVA
Can Dogs Talk? Preview
Do speech buttons really allow dogs to talk to us? Scientists investigate.
NOVA
Asteroids: Spark of Life?
What if violent asteroid impacts actually jump-started life on Earth? Explore a dramatic theory.
NOVA
Angkor: Hidden Jungle Empire Preview
New evidence sheds light on the remarkable life—and mysterious collapse—of the ancient jungle city.