Grist: We are a coastal country, says Susanne C. Moser, a convening lead author for the National Climate Assessments Coasts chapter. The U.S. has 94,000 miles of coastline and more than $1 trillion in coastal infrastructure. Coastal lifelines, such as water and energy infrastructure, and nationally important assets, such as ports, tourism, and fishing sites, all are increasingly vulnerable to sea-level rise, storm surge, erosion, flooding, and related hazards.