If nothing is done to curb carbon emissions, Miami is in danger of being underwater by the end of the century. Jack Black is there to find out if and how the city and other low-lying coastal areas can survive rising seas. He finds a political and business community in denial and talks to a few lone legislators, residents, activists and scientists trying to do something before it’s too late. Ian Somerhalder journeys to the Bahamas to investigate the future threat of superstorms, caused by rising sea temperatures, whose devastating effects could reach biblical proportions. At the Woods Hole Oceanographic Institute, he joins scientists on a deep dive to explore blue holes, underwater caves that have collected the remnants of past storms for centuries.