Native Alaskans are living through a climate-change wake-up call for the US and the rest of the world. As sea ice that's protected coastal villages from harsh winter storms melts away, there's no system to help communities that have to move. We hear about the desperate plight of Eskimo villagers in what looks like a preview of what's to come in more heavily populated locations. It's hard enough to rebuild after one-time events like Katrina or Sandy. Can we prepare for the relocation that might be required by slow-moving disasters?