Nuclear plant explosion in Japan.

The #1 reactor is leaking cesium and radioactive iodine, a result of the nuclear core melting, according to NHK World.  After an explosion, four workers were injured.  Reportedly, the radiation level outside of the plant is 1050 μSv, and exposure for one hour would cause nausea; by comparison, 2400 μSv is an average annual background radiation dosage.  Japan is about to suffer a second disaster.

NYT has an image of the explosion