Al-Jazeera animation explains nuclear meltdown in 2 minutes
Following explosions in at least two reactor cores at Japan's Fukushima nuclear power plant - and as the developing crisis is rated at level 6 of seven levels on the International Nuclear Events Scale - attention is turning to just what is happening inside the 40-year-old power plant in north-east Japan. Al Jazeera's Dan Nolan explains the ongoing situation.
BBC: Japan nuclear leak - health risks
RealNewsReporter: Fallout map
NYT: In Fuel-Cooling Pools, a Danger for the Longer Term