Agence France-Presse: Greenland’s glaciers are melting into the sea faster than ever before, the environmental pressure group Greenpeace claimed on Wednesday. Glaciers move when melting occurs from the effects of global warming, causing masses of ice to slide into fjords and the sea. Greenland’s Helheim glacier, which measures six kilometres wide (four miles) and is one kilometre thick, moves about 25 metres (yards) a day, Greenpeace said in a statement. The group said that is twice as fast …