An abandoned tanker carrying more than one million barrels of crude oil could contaminate vast areas of the Red Sea in a severe, long-term environmental disaster if it breaks up or explodes, experts warn.

The world has not hit the brakes on methane emissions, a powerful driver of climate change. More than 150 nations have pledged to slash by 30% this decade under a global methane pledge, but new research shows global methane emissions over the past five years have risen faster than ever.