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By TED-Ed
Published in 2013
Fresh water accounts for only 2.5% of Earth's water, yet it is vital for human civilization. What are our sources of fresh water? In the first of a two part series on fresh water, Christiana Z. Peppard breaks the numbers down and discusses who is using it and to what ends.
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The world is a watery place. But just how much water exists on, in, and above our planet? This set of data and tables show the amounts of water on Earth.
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By NBC Learn
NBC Learn and the National Science Foundation explore the threats and challenges to our most vital natural resource.
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