Animals & Wildlife Magazine

Scientists: Human Activity Exceeding Earth’s Limits

By Garry Rogers @Garry_Rogers
By Joel Achenbach January 15 at 10:14 PM Scientists:  Human activity exceeding Earth’s limits
Photo:  “Climate change: A severe drought plagued a third of Queensland, Australia in 2013. Destabilizing the global environment could make Earth less hospitable for humans. (David Gray/Reuters)

“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.

“The paper contends that we have already crossed four “planetary boundaries.” They are the extinction rate; deforestation; the level of carbon dioxide in the atmosphere; and the flow of nitrogen and phosphorous (used on land as fertilizer) into the ocean.”

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