EnvironmentGeoengineering can thicken Arctic sea ice, but for how long? Two companies are aiming to preserve Arctic ice by pumping water onto the sheet and letting it freeze, but only one of the trials found that this delayed melting in the summer News
EnvironmentCleaning up air pollution could weaken vital AMOC ocean current Global warming already threatens to destabilise the Atlantic Meridional Overturning Circulation, and new research shows that regional clean-air policies could reduce its strength further News