Reuters: More than 2,500 firefighters struggled in hot summer weather and across rugged terrain on Monday to prevent a wildfire that has charred more than 26,000 acres (10,522 hectares) from advancing toward world-famous Yosemite National Park. The so-called Telegraph Fire’s northwest flank is approaching Coulterville, while its southeast flank threatens Mariposa, towns along rural roads leading to Yosemite in north-central California, fire officials said. Working in 90-degree …