ScienceDaily: Ice shelves are retreating in the southern section of the Antarctic Peninsula due to climate change, according to new data. This could result in glacier retreat and sea-level rise if warming continues, threatening coastal communities and low-lying islands worldwide, experts say. Research by the U.S. Geological Survey is the first to document that every ice front in the southern part of the Antarctic Peninsula has been retreating overall from 1947 to 2009, with the most dramatic …