Agence France-Presse: Defying earlier fears, researchers say the Antarctic Ocean has been absorbing increasing amounts of carbon dioxide over the past decade, making it critical to mitigating the worst effects of climate change. The findings upend estimates, put forward a decade ago, that the seas surrounding the continent were approaching a saturation point and would not be able to continue to absorb increasing amounts carbon dioxide from the atmosphere. Since that time, the amount of carbon dioxide and other greenhouse...