A volcano under a glacier in Iceland erupted Wednesday for the second time in less than a month, melting ice, shooting smoke and steam into the air, closing a major road and forcing hundreds of people to flee rising floodwaters. Authorities evacuated 800 residents from around the Eyjafjallajokull glacier as rivers rose by up to 10 feet (3 meters). Emergency officials and scientists said the eruption under the ice cap was 10 to 20 times more powerful than one last month, and carried a much greater risk of widespread flooding. "This is a very much more violent eruption, because it's...
