Michael Wines Matthew L Wald New York Times

An explosion at a nuclear power plant in northern Japan on Saturday blew the roof off one building and destroyed the exterior walls of a crippled reactor, but officials said radiation leaks from the plant were receding and that a major meltdown was not imminent. (Watch: Explosion at Fukushima nuclear power plant)Japanese television showed a cloud o...

An explosion at a nuclear power plant in northern Japan on Saturday blew the roof off one building and destroyed the exterior walls of a crippled reactor, but officials said radiation leaks from the plant were receding and that a major meltdown was not imminent. (Watch: Explosion at Fukushima nuclear power plant)Japanese television showed a cloud o...