Chief Cabinet Secretary Yukio Edano said Tuesday that a fourth reactor at the Fukushima Dai-ichi complex was on fire and that more radiation was released.
3 reactors 'likely' melting
On Monday, the U.S. Seventh Fleet moved its ships and aircraft away from Japan's northeast coast after discovering low-level radioactive contamination on crews returning from relief missions.
Check out the before and after pictures towards the bottom of the page. Use the slider to compare.