Researchers at Nanyang Technological University used radar data from NASA satellites to measure the degree of land subsidence for 48 of the largest cities in the world. In 44 of them, some areas were sinking at a faster rate than the sea is rising. The median rate for Ho Chi Minh City, for example, was 16.2 mm/year. In Rio de Janeiro, 2 square kilometers of land inside the city limits will be underwater by 2030 if measures are not taken to hold back rising sea.Read Long Article
