It seems that former Vice President Al Gore has rebounded from his split from Tipper.In fact, Gore has a new girlfriend — Elizabeth Keadle — "a well-heeled Democratic donor from Southern California in her 50s with a background in science and a devotion to environmental causes," according to the Washington Post which described their relationship as "serious." The two even traveled together to Antarctica to spread climate change awareness earlier this year — a trip that the former VP detailed in his blog in January. Gore is still married to wife Tipper, though the two have been legally separated for the last two years.