Children climb the branches of a mangrove tree on Batasan, an island in the Philippines, where the highest point is just 6.5 feet above sea level, Nov. 24, 2019. Children on Batasan who are lucky enough to own bikes have one option — up and down the island’s only road, a concrete strip that runs for less than two-thirds of a mile. (Jes Aznar/The New York Times)