More than 70 million people face increased threats from sea level rise worldwide

In coastal communities across the U.S., new data shows land that’s home to more than 260,000 Americans is at risk of increased flooding over the next 20 years. The number of people at risk worldwide is projected to grow five-fold by the end of the century if nations continue their current course of global greenhouse gas emissions, according to the Human Climate Horizons, a collaboration between the United Nations Development Programme and the Climate Impact Lab.