July 2019 temperatures were the hottest ever recorded globally; the US National Oceanic and Atmospheric Administration (NOAA) said on Thursday, while satellite data showed polar ice shrank to its lowest levels.
Using a new net, marine biologists from Germany's Alfred Wegener Institute have, for the first time, been able to catch polar cod directly beneath the Arctic sea ice with a trawl, allowing them to determine their large-scale distribution and origin. This information is of fundamental importance, as polar cod are a major source of food for seals, whales and seabirds in the Arctic.