Bill Werner, Lead Greenhouse Manager of the College of Agricultural and Environmental Sciences at the University of California, Davis, shows drip irrigation tubes used for plants in a greenhouse at the Core Greenhouse Complex on the campus in Davis, Calif., Monday, May 20, 2024. (AP Photo/Jeff Chiu)
A fan hangs above plants growing in a greenhouse at the Core Greenhouse Complex on the University of California, Davis, campus in Davis, Calif., Monday, May 20, 2024. (AP Photo/Jeff Chiu)
Bill Werner, Lead Greenhouse Manager of the College of Agricultural and Environmental Sciences at the University of California, Davis, walks between plants and evaporative cooling pads in a greenhouse at the Core Greenhouse Complex on the campus in Davis, Calif., Monday, May 20, 2024. (AP Photo/Jeff Chiu)
Water drips down evaporative cooling pads in a greenhouse at the Core Greenhouse Complex on the University of California, Davis, campus in Davis, Calif., Monday, May 20, 2024. (AP Photo/Jeff Chiu)
Geese walk near a greenhouse in Morehead, Ky., formerly operated by AppHarvest, Wednesday, June 5, 2024. AppHarvest employees say they saw colleagues carried out on makeshift stretchers due to heat, and dozens more helped outside on others' shoulders. (AP Photo/Joshua A. Bickel)
Bill Werner, Lead Greenhouse Manager of the College of Agricultural and Environmental Sciences at the University of California, Davis, points toward the temperature in a greenhouse at the Core Greenhouse Complex on the campus in Davis, Calif., Monday, May 20, 2024. (AP Photo/Jeff Chiu)