Big worries over tiny particles
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NANOTECHNOLOGY -- engineering substances down to billionths of a meter in size -- holds out such promise of providing super-strong materials or desalinating water inexpensively that no one wants to put a red light in its way. But there are enough safety questions to justify more yellow lights than either industry or government has yet deployed.
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About a third of all Americans live in counties that do not meet seven-year-old standards for microscopic particles of pollution that cause thousands of premature
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EXETER, England  - Minute changes in tiny blood  vessels close to the surface of the skin in children as young  as 11 can indicate the risk of future heart attacks or strokes,  a leading scientist said on Monday.
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Minute changes in tiny blood vessels close to the surface of the skin in children as young as 11 can indicate the risk of future heart attacks or strokes, a leading scientist said on Monday.
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Holiday shoppers may worry if the toys they buy contain lead, but some scientists are urging consumers to focus on the thousands of chemicals in everyday household items.
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A Food and Drug Administration panel tomorrow will consider one of the most urgent questions in medicine: what to do about the risk of blood clots caused by drug-coated stents, tiny medical devices implanted in the arteries of millions of people.
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Air fresheners, furniture polish and household cleaners may increase the risk of asthma in young children, a study has found. Those exposed to fumes from common domestic products
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Pollution experts have "serious scientific concerns" that newly unveiled U.S. air quality standards may pose risks to human health and welfare, according to a letter made public on Tuesday.
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Health officials worldwide are worried about unacceptable levels of lead and other metals in certain Ayurvedic preparations.
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This is one cleaning that could pass anybody's white-glove test. A high-tech dust rag developed by a research chemist at a nuclear weapons plant can pick up potentially deadly beryllium particles that are 20 times smaller than what can be seen with the naked eye. Its inventor, Ron Simandl, says it could be used to mop up industrial accidents or wipe down semiconductor "clean rooms."
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Some of them should be more worried than you are.
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AIR fresheners and aerosols may make homes unhealthier, research has suggested. Children and their mothers suffered more ill health in homes where these products were in daily use, the University
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Doctors and their patients in many countries are facing increasing problems receiving lifesaving isotopes for treating a range of illnesses.
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Household chemicals are being linked to a rise in the number of children with asthma. A study of 7,000 youngsters has resulted in signs that bleach, paint stripper and carpet cleaners used in the home can lead to the condition.
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The risk of suffering a heart attack triples in a traffic jam, according to a study by German scientists. The researchers found that an hour of exposure to the particles
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Exposure to even small amounts of the chemical benzene may pose a health risk, say scientists. They have shown that workers who inhaled less than one part per million had fewer white blood cells than those who were not exposed.
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When it comes to air pollution, the smallest size can do the most harm. More than a decade ago, a pioneering study by Harvard's School of Public Health showed that one of the most dangerous forms of air pollution is particulate matter 10 microns (about 0.0004 inch) or less in size.