An initial autopsy has revealed few clues in the mystery of what happened to a California family found dead on a hiking trail in the Sierra National Forest south of Yosemite. John Gerrish, Ellen Chung and their 1-year-old daughter Miju — as well as their family dog — were found dead at the Devil's Gulch Investigators said the deaths do not appear intentional, and they did not find a suicide note or any signs indicating premeditation. Last month, the Forest Service cautioned on Facebook that people should avoid drinking or swimming in the Merced River due to the presence of...