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Pulse

Season 1 Episode 1
54:36
Civilizations

Civilizations

Season 1 Episode 2
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The Molecule That Made Us Season 1

Crisis

Season 1 Episode 3
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Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
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The Molecule That Made Us

Cracks in the Earth

For tens of thousands of years, underground reservoirs across the world have been collecting water. In recent decades, humans have been pumping this groundwater far faster than it can possibly be replenished. Now, our demands on underground freshwater are outstripping supplies. The ground is sinking in places all over the world, and huge cracks in the earth’s surface are cropping up.