Associated Press: the U.N. climate conference entered its last days, the United States encountered – and rejected – fresh demands Wednesday that it accept ambitious guidelines for negotiating future cuts in emissions of global-warming gases. Pressure came even from a one-time ally on climate, Australia, whose new prime minister urged Washington to "embrace" new binding targets. But U.N. Secretary-General Ban Ki-moon, after opening the ministerial-level final segment of the two-week …