Zapping a cancer patient's tumor with ultrasound increases the tumor's vulnerability to chemotherapy, according to Dr. Mark Bednarski, a visiting professor/scholar at Stanford University School of Medicine,
Dr. Jeffrey L. Cleland and his colleagues at Genentech in San Francisco say they are the first to develop an alternative to current vaccination practices by providing all the needed immunizations in a single shot.
A material with fuel potential ten times greater than all known coal, gas, and oil reserves on the planet lies deep within the oceans or in the permafrost of the arctic tundra, according to Dr. Timothy S. Collett of the United States Geological Survey
Parkinson's disease may be reversible if a drug that has worked in animal tests is as successful in humans.
Should the U.S. continue to support scientists from the former Soviet Union to keep them from selling their expertise to forces hostile to the U.S.? The cost and utility of this support is explored in an article in the April 7 issue of Chemical & Engineering News
The search for potential pharmaceuticals derived from indigenous natural medicines -- marred in the bad old days by exploitation of local Third-World populations -- has now been refined to funnel significant benefits to these groups.
Mutagens have long been known to be present in urban air, but their detection and potency has mostly been measured with a bacterial test. However, extrapolating the observed mutagenic effects from bacteria to humans continually leads to questions about the relevance of bacterial assays. New research represents the first time a human cell mutation assay has been applied to an atmospheric particle monitoring network.
The catalytic converter in your automobile may be removing most of the air pollutants in the car's exhaust gases, but it is also emitting a fine dust containing platinum, a precious metal that is the key ingredient in making the converter effective in controlling air pollution, according to Dr. R. R. Barefoot of the University of Toronto.
The hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) used to replace the chlorofluorocarbons (CFCs) banned by the Montreal Protocol have low or no potential to deplete ozone in the stratosphere, but they may contribute to climatic change, says Dr. Garry D. Hayman of the National Environmental Technology Centre in Oxfordshire, United Kingdom.
The commonly used methods for measuring the efficiency of soil to remove viruses from human waste may be providing inaccurate and misleading information about virus retention and transport in the subsurface, says Dr. Yan Jin of the University of Delaware.
Americans who avoid red meat may not be getting enough iron in their diet, according to research reported in the January issue of the American Chemical Society's Journal of Agricultural & Food Chemistry, due to be published on Jan. 20.
Women who take estrogen-replacement therapy after menopause often also take progestin to avoid an increased risk of endometrial cancer. But progestin itself has a number of side-effects, including resumption of menses and central nervous system disturbances. And estrogen replacement therapy is also associated with increased breast cancer risk, according to Dr. Timothy Grese of Eli Lilly and Co. in Indianapolis.
Like beta-carotene, antioxidants such as vitamins C and E are thought to prevent cancer and other diseases. But researchers have been puzzled by the apparent link between beta-carotene and an increased risk of lung cancer in heavy smokers, as reported recently in the New England Journal of Medicine. Research to be published in the Jan. 22 issue of the Journal of the American Chemical Society appears to clear up this mystery.
The plastic bottle you throw in the recycling bin today may be in your gas tank tomorrow. That type of reclamation of waste material is now possible, according to Dr. Joseph Shabtai of the University of Utah. The results of his work appear in the January/February issue of Energy & Fuels, a bimonthly publication of the American Chemical Society.
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