Associated Press: The increasingly hostile climate predicted by scientists -- rising seas, crippling droughts, ever-stronger super storms -- is the looming nightmare that drives a contingent of young environmental activists that has been seeking to make a mark on U.N. climate talks. The largely 20-somethings agitating for urgent collective action to curb global warming account for a few hundred at best of the 12,500 people accredited to attend the Lima negotiations. They include activists, journalists for green...