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In a first-of-its-kind feat of science and engineering, scientists have successfully drilled through 800 meters (2,600 feet) of Antarctic ice to reach a subglacial lake and retrieve

1In a first-of-its-kind feat of science and engineering, scientists have successfully drilled through 800 meters (2,600 feet) of Antarctic ice to reach a subglacial lake and retrieve

1 In a first-of-its-kind feat of science and engineering, scientists have successfully drilled through 800 meters (2,600 feet) of Antarctic ice to reach a subglacial lake and retrieve

Steen Ulrik Johannessen/Agence France-Presse — Getty Images Updated: Jan. 8, 2013 Global warming has become perhaps the most complicated issue facing world leaders. Warnings from the scientific community are becoming louder, as an increasing body of science points to rising dangers from the ongoing buildup of human-related greenhouse gases — produced mainly by the burning of fossil fuels and forests