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NOVA
Ancient Earth: Frozen Preview
700 million years ago, Earth was a giant snowball cloaked in ice from pole to pole. How did life manage to hold on through this deadly deep freeze, find creative ways to bounce back, and thrive in the dramatically different world that emerged?
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The story of how African-American Percy Julian defied the odds to become a famous chemist.
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What led to the devastating floods that Hurricane Katrina unleashed on New Orleans?
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Journey back to the beginning of everything: the universe, Earth, and life itself.
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Journey back to the beginning of everything: the universe, Earth, and life itself.