You know all that talk recently about reviving the United States' dormant nuclear power industry? Um, this might put a damper on it:

Reactors at two Japanese power plants can no longer cool radioactive substances, a government official said Saturday, adding that a small leak had been detected at one of the facilities.

Atomic material has seeped out of one of the Fukushima Daiichi plant's five nuclear reactors, about 160 miles (260 kilometers) north of Tokyo, said Kazuo Kodama, a spokesman for Japan's nuclear regulatory agency.

[...] This comes amid Kyodo's reports, citing the same Japanese agency, that radiation levels were 1,000 times above normal in the the control room of the "No. 1" reactor at one of the facilities.

Japanese authorities insist that there is no immediate health threat, at the same time they have expanded the evacuation zone to a six mile radius around each of the two damaged reactors.