Current estimates put the world on track for as much as a 5°C temperature increase by the end of the century, reshaping the places that humans have lived for thousands of years. Island states such as Haiti, Cape Verde, and Fiji face “existential risks” from sea level rise and extreme weather events. By as soon as 2050, large parts of Mumbai, Ho Chi Minh City, and New Orleans may be underwater.
Over the next 30 years, the climate crisis will displace more than 140 million people within their own countries—and many more beyond them. Global warming doesn’t respect lines on a map: It will drive massive waves of displacement across national borders, as it has in Guatemala and Africa’s Sahel region in recent years.
