ENVIRONMENT
01/15/2015 06:32 pm ET Updated Jan 16, 2015

Scientists: Human Activity Has Pushed Earth Beyond Four Of Nine ‘Planetary Boundaries'

At the rate things are going, the Earth in the coming decades could cease to be a “safe operating space” for human beings. That is the conclusion of a new paper published Thursday in the journal Science by 18 researchers trying to gauge the breaking points in the natural world.

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