In one year, energy disasters in the Gulf and at Fukushima point to the challenge of human control over complex technology.
Obama administration must decide by midsummer whether to extend a freeze on uranium mining claims near the Grand Canyon. A recent report cites 10 national 'treasures' at risk.
Workers in Ishinomaki, Japan, have cleared thousands of tons of debris from streets and buildings inundated by the March 11 tsunami. A long-time shopkeeper says customers are starting to return.
The Japanese disaster at the Fukushima Daiichi nuclear plant is providing good lessons for US atomic plants. In either negative or positive ways, Japan's influence on America keeps growing, like shiitake mushrooms.
Millions of people in Japan are restarting their lives after last month's devastating earthquake and tsunami. But they're finding the path to recovery is a bumpy one.
One month after the March 11 quake that triggered a tsunami and damaged the Fukushima Daiichi nuclear power plant, Japanese authorities say they're still crafting plan to end the nuclear crisis.
The 1986 Chernobyl accident was far worse than Fukushima has been. But the issues it raises are the same -- quality of industrial design, the potential for human error, the threat of natural disaster, and the disposal of long-term radioactive waste.
According to the IAEA's scale, the Fukushima crisis in Japan is now a 7, the most severe rating and equal with Chernobyl. But experts say the scale is deeply flawed.
Based on new estimates of the radiation that has been released, Fukushima now has the worst score on the IAEA's accident rating scale. But much about the reactors, and their future, is still unknown.
Japan's prime minister is urging the public not to panic after the government boosted the severity level of the crisis at Fukushima to the highest rating, the same level as the 1986 Chernobyl disaster.