Climate researchers agree that warmer temperatures in the Gulf of Mexico are adding at least 5 percent more moisture to Harvey. But the reason for storm's sloth is less clear.
James Rainey, NBC News
Tue, 08/29/2017 - 10:55am
Climate researchers agree that warmer temperatures in the Gulf of Mexico are adding at least 5 percent more moisture to Harvey. But the reason for storm's sloth is less clear.