Nature World: The so-called Rim Fire blazing through eastern central California expanded by 50 square miles since Friday and continues to threaten the perimeter of Yosemite National Park. It is now said to be five percent contained as of Saturday, an improvement from two percent containment on Friday.
Some backwoods hiking trails and roads leading into the national park have been closed due to the fire, but the Yosemite Valley, which is home to iconic landmarks such El Capitan and the Half Dome rock formations,...