If Humanity Wishes To Preserve A Planet Similar To That On Which Civilisation Developed And To Which Life On Earth Is Adapted, Paleoclimate Evidence And Ongoing Climate Change Suggest That Co₂ Will Need To Be Reduced From Its Current 385 Ppm [parts Per Million] To At Most 350 Ppm... If The Present Overshoot Of This Target Co₂ Is Not Brief, There Is A Possibility Of Seeding Irreversible Catastrophic Effects.
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If Humanity Wishes To Preserve A Planet
James Hansen
If Humanity Wishes To Preserve A Planet Similar To That On Which Civilisation Developed And To Which Life On Earth Is Adapted, Paleoclimate Evidence And Ongoing Climate Change Suggest That Co₂ Will Need To Be Reduced From Its Current 385 Ppm [parts Per Million] To At Most 350 Ppm... If The Present Overshoot Of This Target Co₂ Is Not Brief, There Is A Possibility Of Seeding Irreversible Catastrophic Effects.
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