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NOVA
How Earth’s Climate Changed Over the Past 500 Million Years
Over its history, Earth has fluctuated between two climate states: Icehouses, with ice caps at at least one of the poles, and Hothouses, when there is no ice at the poles.
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53:40
Take a wild ride into the quantum realm, where even the impossible seems possible.
53:40
It defines our lives, but what is time really? Have a look into its true nature.
53:40
Surprising clues indicate that space is very much something and not nothing.
1:43:15
We are on the verge of answering one of the greatest questions in history: Are we alone?
1:52:42
The story of how African-American Percy Julian defied the odds to become a famous chemist.
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52:31
What led to the devastating floods that Hurricane Katrina unleashed on New Orleans?
