Time: More than 10,000 migrants and refugees traveled to Western Europe via Hungary over the weekend, fleeing conflict-ravaged and impoverished homelands in the hope of finding a more secure life abroad. Even as Europe wrestles over how to absorb the new arrivals, human rights activists and migration experts warn that the movement is not likely to slow anytime soon. Intractable wars, terror and poverty in the Middle East and beyond will continue to drive the surge. One additional factor, say scientists,...