If the world does nothing to mitigate sea level rise, coastal flooding will become so extreme and destructive that it could cause damage worth up to 20% of global gross domestic product by 2100, according to new research. The study, published Thursday in the journal Science Reports, is the first to map the projected economic impact of sea level rise caused by the climate crisis. The authors say rising sea levels could cost the global economy $14.2 trillion in lost or damaged assets by the end of the century, as larger areas of land, home to millions of people, are inundated. "This is on a 'business as usual' CO2 ... (full story)