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By David Cyranoski of Nature magazine The largest-ever study of the genetics of depression is set to go ahead in China, after a major survey found that the condition largely has the same triggers and symptoms there as in the West -- albeit with a few startling exceptions. Previous studies on twins in Sweden have shown that genetics explains about 40% of a woman's risk of depression, and about 30% of a man's. [More]

As the condition of the stricken Fukushima Daiichi nuclear power station in Japan continues to deteriorate, nuclear safety experts, government regulators and health physicists are keeping close watch on the situation to determine the danger--both real and hypothetical--that the incident poses to people near the plant. [More]