Japan nuclear crisis raised to highest level

The Japanese authorities have raised the severity of their nuclear crisis to the highest level.

They have reassessed the damage at the Fukushima nuclear plant following last month's earthquake and tsunami.

The incident has now been rated level seven - only used previously for the Chernobyl disaster in 1986.

Mark Kemp, a British teacher living in Koriyama city, about 30 miles from the damaged Fukushima reactor, tells the BBC that although it is not "business as usual, people are trying to get back to normal as much as they can".