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Earth May Be Approaching Irreversible Tipping Point

June 7, 2012 5:06 p.m.

Human activity may be driving the earth's climate toward an irreversible tipping point, say researchers from the University of California and around the world. This could mean major changes to ecosystems we rely on for clean water, fisheries and agriculture.

Related Story: Earth May Be Approaching Irreversible Tipping Point


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