Last summer scientists documented that the sea level is rising faster in the northeastern United States than in almost any other place on the globe. They spelled out a series of risks, including the flooding of the New York subway system—which happened last month during Hurricane Sandy. It’s unclear whether New York City can build sea walls to protect against future storms and higher seas. New York is 17th on a list of cities worldwide that are subject to calamities from flooding due to global warming. Leading the list are Mumbai and Kolkata, which are less likely than New York to be able to hold back rising seas (Bill McKibben at commondreams.org).