People hold umbrellas as it rains in Seoul April 7, 2011. Concerns about radiation fallout from Japan's nuclear disaster prompted some schools in South Korea to shut on Thursday as rain fell over most of the country, but the nuclear safety agency played down immediate health risks. The country's nuclear safety agency said a small level of radioactive iodine and caesium particles were reported in the rain falling on the island of Jeju off the country's south coast but it was not enough to cause public health concern. [Photo/Agencies]