Cities worldwide are headed for a "Day Zero'' when taps will run dry. Even though water covers over 70% of the Earth's surface, only about 1% is fresh enough to drink. Scientists are working on ways to desalinate water, but will it be enough, and if so, will it be in time?

If you’d like to take action on the climate or learn more about the topics covered in “Dark Green: Earth Crimes and Conspiracies,” visit www.spotify.com/darkgreenresources.

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