Global warming will exceed limit, UN says in a report that maps path to get back below danger zone

The useful part

In a strategic retreat in the fight against climate change, the United Nations has acknowledged that Earth has lost its chance to prevent some of the worst of global warming's harms. So now the world must figure out how to get temperatures below the danger zone and back to safety, officials say. officials recommend trying to limit excessive warming and then bring the temperature back down to the agreed-upon threshold.

How it works

• It still will mean decades of increased weather-related disasters, rising seas, extinctions and melting ice and glaciers.
• After a period of over-the-limit warming, the new strategy envisions getting back below the limit by ending fossil fuel use and developing some kind of way to suck industries' carbon dioxide out of the air.