THOSE MEETING IN THE ONGOING SESSIONS at the climate change summit in Paris have a number of impending tragedies hanging over their heads. They talk in urgent terms about floods, drought, heat, cold, ocean currents, wind directions, and desertification, but the ultimate concern they face in the next few decades is really about people – millions and millions of them. Worst of all, global leaders still don’t know how to handle the coming onslaught. We’d be foolish think this will be a future phenomenon. Already a few million such souls are migrating over the earth in search of sustainability and security. It’s just that their numbers are about to get a whole lot bigger … and troubling. We talked about this before, but it…