
Preview | Hidden in the Amazon
Preview: Season 20 Episode 4 | 32sVideo has Closed Captions
New evidence sheds light on the early indigenous societies of the Amazon.
Recent discoveries and technological advances are shedding new light on our understanding of pre-Columbian societies in the Amazon. Scientists speculate the rainforest was home to between 8 and 10 million people living in large, well-established communities.
Problems with Closed Captions? Closed Captioning Feedback
Problems with Closed Captions? Closed Captioning Feedback
SECRETS OF THE DEAD is made possible, in part, by public television viewers.

Preview | Hidden in the Amazon
Preview: Season 20 Episode 4 | 32sVideo has Closed Captions
Recent discoveries and technological advances are shedding new light on our understanding of pre-Columbian societies in the Amazon. Scientists speculate the rainforest was home to between 8 and 10 million people living in large, well-established communities.
Problems with Closed Captions? Closed Captioning Feedback
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Wasps Surround Oldest Traces of Human Settlement in Amazonia
Video has Closed Captions
Clip: S20 Ep4 | 2m 5s | Archaeologist Edithe Pereira analyzes prehistoric wall paintings — careful to avoid wasps! (2m 5s)
SECRETS OF THE DEAD is made possible, in part, by public television viewers.