A FedEx employee works outside, Friday, Aug. 25, 2023, in Las Vegas. A historic heat wave that began blasting the Southwest and other parts of the country this summer is shining a spotlight on one of the harshest, yet least-addressed, effects of climate change in the U.S.: the rising deaths and injuries of people who work in extreme heat, whether inside hot warehouses and kitchens or outside under the blazing sun. Many of them are migrants in low-wage jobs. (AP Photo/Ty O'Neil)
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