"A draft United Nations climate science report contains dire news about the warming of the planet, suggesting it will likely cross the key marker of 1.5 degrees Celsius, or 2.7 degrees Fahrenheit, of temperature rise in the 2040s, and that this will be exceedingly difficult to avoid.
Temperatures could subsequently cool down if carbon dioxide is somehow removed from the air later in the century, the document notes. But that prospect is questionable at the massive scales that would be required, it observes.
The 31-page draft, a summary of a much-anticipated report on the 1.5 degrees Celsius target expected to be finalized in October, was published by the website ClimateHome on Tuesday. The website said the document had been “publicly available on the U.S. federal register over the past month.” Last month, several news outlets, including Reuters, quoted from the draft but did not publish it in full."