Scientists are documenting a barrage of impacts — ones‚ they say‚ that will confront an even larger swath of U.S. coastal communities in the coming decades — even as they try to decipher the precise causes of this recent surge. The Gulf of Mexico has experienced twice the global average rate of sea level rise since 2010‚ a Post analysis of satellite data shows. Few other places on the planet have seen similar rates of increase‚ such as the North Sea near the...