AP - Getting one of the roughly 11,500 permits granted each year to backpack overnight in the Grand Canyon has become so competitive and "unfair" that managers at the national park have decided to change the system. Mon, 23 Nov 2009 00:33:26 GMT

AP - Since the 1997 international accord to fight global warming, climate change has worsened and accelerated — beyond some of the grimmest of warnings made back then. Mon, 23 Nov 2009 05:00:46 GMT

AP - Sixty-five world leaders have said they will attend the Copenhagen climate summit in December, and several more have responded positively to invitations, Danish officials said Sunday.
Sun, 22 Nov 2009 17:49:47 GMT

LiveScience.com - The deep sea is teeming with thousands of species that have never known sunlight, explorers now say. Sun, 22 Nov 2009 17:11:33 GMT