Topic: Hidehiko Nishiyama

7.1 earthquake knocks out power for nearly a million

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

Nuclear update: Leak stopped. Why is Japan injecting nitrogen into reactor?

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 found in soil near Fukushima plant

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

Japan nuclear mystery: Where are pools of radioactive water coming from?

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

Radioactive seawater in Japan raises new fears of reactor crack

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

Japan nuclear crisis: Suddenly, light at the end of the tunnel?

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