Nuclear Experts Explain Worst-Case Scenario at Fukushima Power Plant: Scientific American

Nuclear Experts Explain Worst-Case Scenario at Fukushima Power Plant: Scientific American: "Nuclear Experts Explain Worst-Case Scenario at Fukushima Power Plant
The type of accident occurring now in Japan derives from a loss of offsite AC power and then a subsequent failure of emergency power on site. Engineers there are racing to restore AC power to prevent a core meltdown."

I hope restoring power to the core is the simple solution.