Forbes: The devastation wrought by Hurricane Sandy has focused minds on the urgency of improving the climate resiliency of coastal cities exposed to the fury of extreme weather events and rising seas. Hard questions are being asked of city and state officials who did not heed warnings by scientists that New York City’s infrastructure was woefully unprepared for storm surges and floods. On July 2, 2011, a cloud burst inundated Copenhagen with 6 inches of rain in less than three hours, flooding cellars, streets,…