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What's Oil Shale?

science.howstuffworks.com/environmental/energy/oil-shale.htm

Oil shale is just one unconventional oil source that's being researched. Learn how oil shale could save the day when — and if — we hit peak oil in the U.S.

Desalination Plants: The Future of a Sustainable Water Supply

science.howstuffworks.com/environmental/earth/oceanography/desalination.htm

Desalination is the process of removing the salt from seawater, which turns the water into fresh drinking water. Learn about desalination.

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