EnvironmentArctic Ocean reaches tipping point that could be dire for marine life Disappearing sea ice is letting more sunlight in the Arctic Ocean and boosting phytoplankton growth, but this has depleted a crucial nutrient, which could severely affect animals higher up the food chain News
EnvironmentCollapse of key ocean current may release billions of tonnes of carbon If the Atlantic Meridional Overturning Circulation shut down, the knock-on effects could release hundreds of billions of tonnes of CO2, raising global temperatures even further News