National Public Radio: There may be no polar bears at the South Pole, but there sure is a lot of ice. In fact, more than 90 percent of the Earth’s glacial ice is in Antarctica. Now, new research shows the continent’s ice is melting in more places than previously known. Host Guy Raz speaks to scientist Jane Ferrigno of the U.S. Geological Survey about the Antarctic Peninsula’s ice retreat. GUY RAZ, host: In Antarctica, you’ll find 90 percent of the world’s glacial ice, but new research from the …