CNN: Copenhagen, Denmark, is 5,000 miles away from New Orleans, Louisiana. But representatives of the 192 nations gathering this week at the climate change conference need to keep the memory of a flooded New Orleans in mind. Two years ago this month, the Make It Right Foundation was launched to help the families of New Orleans’ Lower 9th Ward rebuild their lives and community. That was already two years after Katrina, and the once-vibrant neighborhood was still in ruins, failed by …