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As workers race to stave off further melting at the Fukushima Daiichi nuclear reactors in Japan , several robots there are waiting on the sidelines for an opportunity to help. Questions remain, however, regarding how these units might assist in an ongoing emergency at a site contaminated with radiation and deluged with tons of corrosive seawater . [More]

* Key differences between Fukushima and Chernobyl * Expert says some radioactive releases comparable [More]

By Gwyneth Dickey Zakaib One thing is certain about the human costs of the radiation leaking from the Fukushima Daiichi nuclear plant in Japan: they will pale in comparison to the catastrophic consequences of the March 11 earthquake and tsunami that triggered the crisis. [More]

By Geoff Brumfiel T The magnitude-9.0 earthquake rocked Fukushima Daiichi nuclear power station at 2:46 p.m. [More]

* Power cable reaches crippled Fukushima reactors * More than 21,000 dead or missing in northeast [More]

As night fell on Friday in Japan, workers and soldiers continued heroic efforts to douse the potential meltdown underway at the Fukushima Daiichi nuclear power plant. The covering darkness is not the only reason for confusion: vital systems monitors have lost power, making the status of critical elements--such as the integrity of the nuclear fuel rods in reactor No.

In the days following Japan's March 11 earthquake, the Fukushima Daiichi nuclear plant there suffered increasing damage as its cooling systems failed, probably causing a build-up of hydrogen gas that led to explosions at three of its reactor units. [More]

There are reports that the U.S.

If the recent events in Japan were a movie, we'd say that the plot was too outlandishly catastrophic to be true--first an earthquake, then a tsunami, then a nuclear accident. Watching footage of entire neighborhoods being shoveled inland by roiling water, and knowing that those buildings and vehicles contained people, was horrifying.But while the citizens of Japan continue to struggle with their own personal hell, many

By Fredrik Dahl VIENNA (Reuters) - Minuscule amounts of radioactive particles believed to have come from Japan's Fukushima nuclear power plant have been detected on the U.S. west coast, two diplomatic sources said Friday. [More]

By Declan Butler Nature revealed earlier this week than an international agency set up to detect nuclear tests, the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), is transmitting detailed data on the spectrum of radionuclides and their levels in the air in and around Japan and the Asia-Pacific region to its member states each day, but that the CTBTO could not release these data to the public because it lacked a mandate to do so. Now, at least one CTBTO member state, Austria, intends to make some of the data public in the form of summary reports and forecasts of global radiation spread.

Japanese citizens rush to the stores to stock up on survival supplies fearing a possible nuclear meltdown and radiation stemming from the damaged Fukushima Daiichi nuclear plant. Lucy Craft reports.

Dr. Ritsuko Komaki was 2 years old when an atomic bomb was dropped on Hiroshima, Japan.

The hydrogen explosions, melting fuel rods and radiation leaks at Japan's Fukushima Daiichi nuclear plant are having an immediate impact on perceptions of nuclear power worldwide, at a time when many countries are earnestly searching for alternatives to fossil fuels. Safety will be a major concern, particularly as emergency workers in Japan continue to battle to keep spent fuel rods stored on site at Fukushima Daiichi from melting down. [More]

The top U.S. nuclear regulator, Gregory Jaczko, gave a dire assessment of Japan's nuclear crisis yesterday, saying that lethal radiation from uncovered spent fuel above one of the reactors could force emergency workers to abandon their fight to prevent meltdowns of damaged reactor cores at the Fukushima Daiichi plant