AP Photo

Since the earthquake struck Haiti 10 days ago, an arresting satellite picture has flitted across television screens. It shows the Caribbean island of Hispaniola, which is divided between Haiti, the western third, and the Dominican Republic, to the east, the bigger part of the island.

From space, Haiti is grey-brown, all of its forests having been cut down for timber or fuel. But the Dominican Republic is lush and green, visibly flourishing. The two parts of the island seem to come from separate continents, though all that actually divides them is their frontier.