Western US states are baking in an extended heat wave, with temperatures threatening to break the all-time high recorded on Earth.
In Phoenix, Arizona, the mercury hit 47C (116F) on Friday, and in the desert of Death Valley, California, the thermometer approached 51C.
The heat wave is expected to last through the weekend.
Cities in the region are opening cooling centres and officials fear the heat could delay air travel.
Arizona resident Michael Fedo describes the conditions.