From Reuters: The sky will soon be full, view it while you can.
At present emissions levels, in less than 20 years the sky would effectively be full, meaning every extra tonne of carbon dioxide (CO2) emitted would have to be removed to stay within safer climate limits, one lead author says.
Other experts say it isn’t clear how far specific changes are the result of emissions or simply natural effects.
“There’s no final decision,” said the Potsdam Institute’s Vladimir Petoukhov.
For example, last week it emerged that Arctic sea ice this summer melted to a record low extent, or a close second. Natural weather effects partly explained the previous record in 2007, scientists say, and may help explain this year’s, said Petoukhov.
h/t to Tom Nelson