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Humans Have Crossed 6 of 9 ‘Planetary Boundaries’

14 Sep 2023 | Abstracted from Scientific American

"Human activity is turning Earth into a world that may no longer adequately support the societies we've built...The new study marks the second update since the 2009 paper and the first time scientists have included numerical guideposts

"...Carbon dioxide levels are included in the framework...so are biodiversity loss, chemical pollution, changes in the use of land and fresh water and the presence of the crucial elements nitrogen and phosphorus."

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