Topic: Hidehiko Nishiyama
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7.1 earthquake: The new tremor late Thursday threw even more areas into disarray and sent communities that had made some gains back to square one.
04/08/2011 01:06 pm
Workers plugged a leak of highly radioactive water into the ocean from Japan's Fukushima Daiichi nuclear power plant Wednesday, even as they tried to prevent another hydrogen explosion in reactor No. 1 by injecting nitrogen gas.
04/06/2011 03:50 pm
Plutonium has been found in low quantities in the soil around the stricken Fukushima nuclear power plant as public dissatisfaction with officials continues to percolate.
03/29/2011 01:56 am
The contaminated pools in the reactor turbine buildings have created a tough new challenge for officials trying to contain the Japan nuclear crisis. The source of radioactivity is a mystery.
03/28/2011 02:56 pm
Levels of radioactive iodine reached 1,250 times above normal in seawater off the coast of Japan's stricken Fukushima Daiichi nuclear plant, raising concerns about a containment crack.
03/26/2011 10:52 am
Photos of the Day Photos of the Day 03/25
The power to operate cooling pumps, a challenge at the heart of the Japan nuclear crisis, is on the verge of being restored, and a detailed assessment by a US expert is notably upbeat.
03/21/2011 07:19 pm
In Pictures Japan's nuclear crisis