“In Miami, the U.S. metropolitan area that is perhaps most exposed to sea-level rise, the problem is not climate change denialism. Not when hurricane season, which begins this week, returns each year with more intense and frequent storms. Not when finding flood insurance has become increasingly difficult and unaffordable. Not when the nights stay so hot that leaving the house with a sweater to fend off the evening chill has become a thing of the past.” A 20-Foot Sea Wall? Miami Faces the Hard Choices of Climate Change.