Associated Press: A small part of Antarctica turned green Saturday as the ice-covered continent’s biggest wind farm, which can generate enough electricity to power 500 homes, was formally switched on. The joint New Zealand-U.S. project’s three huge turbines will provide 11 percent of the power needed to run the two nations’ science bases on Antarctica’s Ross Sea coast, cutting greenhouse gas output, lowering fossil fuel use and reducing the risk of fuel spilling in the continent’s pristine environment, …