A study has found that the Atlantic Ocean current (AMOC) is closer to collapse than previously thought, with estimates that it will halve in strength by 2100 and may be even more weak than predicted. The study corrects for biases in previous estimates by including the temperature and saltiness of the Ocean Ocean's surface. It suggests that the AMOC will slow down between 43% and 59% by 2100, a 60% stronger weakening than past models predicted. However, experts warn that the predicted magnitude and speed of an AMOC slowdown varies greatly from study to study. An AMOC collapse would last for hundreds to thousands of years and disrupt food webs and ecosystems in the ocean and on land.