This photograph taken on December 4, 2009 shows a glacier in the Everest region some 140 km (87 miles) northeast of Kathmandu. The Himalayan glaciers provide water for more than a billion people in Asia, but experts say they are melting at an alarming rate, threatening to bring drought to large swathes of the continent within decades. | Prakash Mathema/AFP/Getty Images

It Might Still Be Possible to Limit Global Warming to 1.5 Degrees Celsius

A pair of reports argue that the odds of achieving the most ambitious goal of the Paris agreement of climate change — keeping temperature rise to just 1.5 degrees Celsius — may have gone from impossible to very difficult.

‘But 1.5°C or less warming may simply be off the table without highly speculative negative emissions technology.’