Firefighters battling home-threatening wildfires in the West caught a break overnight as gusty winds died down but with the region bracing for sweltering heat, Saturday’s respite could be brief, authorities said.
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In 120 degree temperatures, some airplanes might not takeoff. Power grids strain as the outside air keeps transmission lines from cooling. And for desert dwellers, a cold bottle of water and some shade can mean the difference between life and death.