It's As Certain That As Long As

The Most Difficult Task, Phase-out Over The Next 20-25 Years Of Coal Use That Does Not Capture Co₂, Is Herculean, Yet Feasible When Compared With The Efforts That Went Into World War Ii. The Stakes, For All Life On The Planet, Surpass Those Of Any Previous Crisis. The Greatest Danger Is Continued Ignorance And Denial, Which Could Make Tragic Consequences Unavoidable.

What Has Become Clear From The Science Is That We Cannot Burn All Of The Fossil Fuels Without Creating A Very Different Planet.

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.

I Think We Have A Very Brief Window Of Opportunity To Deal With Climate Change. No Longer Than A Decade At Most.

...99 Percent Confident That The World Really Was Getting Warmer And That There Was A High Degree Of Probability That It Was Due To Human-made Greenhouse Gases.