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Water has shaped planet Earth—it has carved out the world's most impressive gorges and makes all life possible. Incredibly, only three percent of all water on our planet is fresh: it is as precious as it is vital, and it is full of life.
Make sure to check out the full Planet Earth lineup.
Learn more about the climates and ecosystems from around the world in our
Guide to Planet Earth.
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The Ocean Has Issues: 7 Biggest Problems Facing Our Seas, and How to Fix Them
The Oceans Need Your Help: Take Action
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