AP: A $3.2 million center where people will learn about climate change and the threat of sea level rise is slated to be built in the Lower 9th Ward with federal and private dollars. The center will be constructed near a floodwall that broke during Hurricane Katrina, unleashing a torrent of flood waters that destroyed the Lower 9th Ward. The neighborhood is still largely empty but a series of pioneering ecological homes are being built there. The rebuilding efforts are being …