Students and teachers often suffer heat-related illnesses at schools in Puerto Rico, one of many places where extreme heat is disrupting children’s education more frequently.

FILE - In this Jan. 13, 2017 file photo, a gate stands closed near Ferro Port lighthouse at Verdiales Key point on the south coast of Vieques island, Puerto Rico. An unknown number of munitions remains on both islands located just east of Puerto Rico as teams use tools ranging from machetes to drones to help clean the area. Meanwhile, cleanup at 14 of 15 former military sites in Culebra will continue through fiscal year 2031, the agency said. The report noted, however, that the U.S. Navy expects some 5,000 acres in Vieques might open by 2021 for hiking and other activities. The U.S. government has said that past military actions and ongoing cleanup efforts pose no risk, but many have disputed those findings.