Ban calls for global action to slow climate change; Antarctic melt moves inland; Ahmadinejad in NY...

25 September :: UN Sec. Gen. Ban Ki-moon has called for concerted action to slow global warming, saying "I am convinced that climate change, and what we do about it, will define us, our era, and ultimately the global legacy we leave for future generations"... Discovery reports "Antarctica's once fringe-thawing is moving well inland, say scientists who have studied water-sensitive microwave satellite data spanning the years 1987 to 2006"; in 2005, considered a major event in terms of hot weather, with melt found more than 500 miles inland and at 5,500 feet elevation in the Transantarctic Mountains... Iran pres. Mahmoud Ahmadinejad addresses Columbia University, after univ. pres. introduces him as a "cruel and petty dictator" who is "astonishingly uneducated", captures US media attention, makes plea for his nation's right to nuclear power; protesters outside called him the "new Hitler"... UK health secretary has announced plans to "remorselessly" fight to eliminate hospital 'superbugs'; Johnson says he plans to see "zero" incidence of MRSA in UK hospitals... Social networking site helps Kentucky youth bring pres. candidate Edwards to town of 229, Columbus, KY, once considered by Thomas Jefferson for national capital after burning of Washington; Shawn Edwards, 24, is also running a campaign to try to unseat Senate minority leader Mitch McConnell...