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With new, stricter efficiency standards almost upon us, it's time to think differently about your lights. Here's why you should feel fine.
The high-res images could help researchers better understand the conducting tissue that triggers each heartbeat.
The souped-up 747 was built to pack a "megawatt-class" laser and cut down enemy missiles before they could do any harm. But the funds ran dry, so it's off to the "Boneyard."
Tiny amounts of radiation from the stricken nuclear power plant have spread across the Pacific. An expert from Columbia's Center for Radiological Research assesses the health risks.
A nuclear expert with Physicians for Social Responsibility says there is no "safe" level of radiation. But for now, he advises caution, not panic.
The greatest danger from radiation is to Fukushima Daiichi plant workers who are trying to prevent a large-scale release of radioactive material, which would affect the immediate area.
Anxiety over Japan's damaged nuclear plant increases as top U.S. nuclear regulator calls situation worse than reported by Japanese government and says "extremely high" radiation levels could hamper containment efforts.
The tense nuclear emergency in Japan will likely lead to efforts to review plant safety and reshape the debate over the future of nuclear power which had been gaining support.
As many as 1,700 people are so far confirmed dead, with another 10,000 missing; meanwhile, Japan braces for a possible second explosion after what are presumed to be two partial meltdowns.
FDA approves the first human clinical trial using inorganic material in the same way as a drug, and it will determine whether the "C dots" are safe and effective in five melanoma patients.