It's been a record hot summer in many cities across the nation. Phoenix is no exception. This Sonoran Desert metropolis already records more days over 100 degrees than any other major U.S. city. Now, climate models predict Phoenix will soon get even hotter.
A hotter future may mean a more volatile environment — and along with it, natural disasters, greater pressure on infrastructure, and an increased physical toll on city residents.
If you're from a state once considered the "Old West," odds are you've heard of a Boot Hill graveyard. Turns out there are a number of Boot Hill cemeteries in the West, so named because many of their inhabitants died violently — with their boots on.
But of all the Boot Hill cemeteries, none is as famous as Boot Hill in Tombstone, Ariz.
It's a tough-looking place. No lawn, just gravel, mesquite trees and cactus. The graves are covered with stones to keep varmints from digging up the bones.