Thirty-three 0

• percent by which energy-efficient windows can cut cooling and heating bills

• percentage of the world's population living in countries experiencing moderate to high water stress

• percentage of toxic water pollution caused by personal vehicle use

• percentage of the world's energy consumed by developing nations

• percentage of all raw materials used in the U.S. that go toward the production of meats, dairy products, and eggs

• percentage of the world's remaining temperate rainforests that are in Chile

Sources:
1 -- Alliance to Save Energy
2 -- World Resources Institute
3 -- Earth Communications Office
4 -- World Resources Institute
5 -- 50 Simple Things You Can Do to Save the Earth
6 -- Christian Science Monitor

 

Josh Sevin is a graduate student in MIT’s planning program. Previously, he was an editor at Greenwire environmental news service and a researcher for U.S. News.

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