Associated Press: President Barack Obama said Saturday that climate change is already damaging America's national parks, with rising temperatures causing Yosemite's meadows to dry out and raising the prospect of a glacier preserve without its glaciers someday. "Make no mistake. Climate change is no longer just a threat. It's already a reality," Obama said from a podium, with Yosemite Falls, one of the world's tallest at 2,425 feet, as a backdrop. At the California park, where Obama was spending the weekend with...