National Public Radio: Radiation surrounding Japan's crippled Fukushima nuclear plant has increased 18 fold following a report last month that radioactive water had leaked into the ground around the plant, which was badly damaged in the 2011 earthquake and tsunami. Tokyo Electric Power Co., which owns the Dai-Ichi Fukushima plant, reports that radiation around the site is at 1,800 millisieverts per hour, a level that Reuters says is "enough to kill an exposed person in four hours." Previously, the utility, also known...