CBS: A glacier in Greenland lost 2.7 square mile piece of ice – roughly one-eighth the size of Manhattan Island – in a single day last week. Greenland’s Jakobshavn Isbrae glacier broke up on July 6 and 7, pushing the point where the ice sheet meets the ocean further inland than at any time previously observed, NASA-funded researchers said. As much as 10 percent of all ice lost from Greenland comes through Jakobshavn, which scientists also believe to be the single biggest contributor to sea …