The wildfires raging in California have killed at least 31 people and destroyed thousands of businesses and homes, including that of Peanuts creator Charles Schulz. The Washington Post reports that the death toll has reached "historically grim heights," with entire neighborhoods gutted and authorities facing the gruesome task of trying to ID the dead. CNN notes officials are turning to a whole slew of identification markers, including using tattoos, fingerprints, and even hip implant serial numbers, in addition to dental records. "Some of them are merely ashes and bones," says Sonoma County Sheriff Rob Giordano. "And we may never get truly confirmative identification on ashes. When you're cremated, you can't get an ID." More on the fires: