Cuba may be responsible for only 0.08 percent of global CO2 emissions, but this Caribbean island is disproportionately hard-hit by the effects of climate change. The frequency and severity of extreme weather events — hurricanes, drought, torrential rain, flooding — is increasing, to the detriment of ecosystems, food production, and public health. Without action to protect the coastline from rising sea levels, up to 10 percent of Cuban territory could be submerged by the end of the century. This risks wiping out coastal towns, polluting water supplies, destroying agricultural lands, ruining tourist beaches, and forcing one million people to relocate — some 9 percent of the population. But unlike many countries, where climate action is always something promised for the future, in Cuba, serious action is being taken now.