Reuters: A relatively small but fast-moving wildfire in California's Sierra Nevada mountains grew overnight, destroying homes and threatening about 6,000 residences, fire officials said on Saturday. The so-called Butte Fire has destroyed 15 homes in rural Amador and Calaveras counties, where it covers an estimated 64,728 acres (26,195 hectares), California Department of Forestry and Fire Protection spokeswoman Lynn Tolmachoff said. She said the fire grew overnight after officials initially overestimated...