Cities of the Sky

Discover the cosmological secrets behind America's ancient cities. Scientists explore some of the world's largest pyramids and 3D-scan a lost city of monumental mounds on the Mississippi River; native elders reveal ancient powers of the sky.

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From Caves to Cosmos

Combine ancient wisdom and modern science to answer a 15,000-year-old question: who were America's First Peoples? The answer hides in Amazonian cave paintings, Mexican burial chambers, New Mexico's Chaco Canyon and waves off California's coast.

  • 2020-01-07T06:00:00-08:00
    KCET-HD