World has three years left to stop dangerous climate change, warn experts

Former UN climate chief Christiana Figueres among signatories of letter warning that the next three years will be crucial to stopping the worst effects of global warming

Avoiding dangerous levels of climate change is still just about possible, but will require unprecedented effort and coordination from governments, businesses, citizens and scientists in the next three years, a group of prominent experts has warned.

Warnings over global warming have picked up pace in recent months, even as the political environment has grown chilly with Donald Trump's formal announcement of the US's withdrawal from the Paris agreement. This year's weather has beaten high temperature records in some regions, and 2014, 2015 and 2016 were the hottest years on record.