As the effects of global warming and climate change get real by the day, cities are bound to soon find themselves succumbing to the rising water levels. Climate Central's project, based on IPCC's 2021 report, maps out these cities around the globe that could find themselves underwater as early as 2030. Along with cities like Amsterdam and Venice, Kolkata is also expected to be underwater by 2030, unless drastic changes to combat climate change are taken.