A man pours water on his face to cool off on a hot summer day in Guwahati, India, Saturday, May 25, 2024. Month after month, global temperatures are setting new records. (Photo: AP/Anupam Nath
Mutations in the gene that encodes a receptor called CCR5 can stop HIV (blue) entering immune cells. (Photo: Nature/NIAID/National Institutes of Health/SPL)
A passenger plane flies underneath dark clouds illuminated by some sun rays above Jeddah, Saudi Arabia, Friday, Aug. 19, 2022. (Photo: AP/Hassan Ammar)
