Some of the most important compounds are the shortest lived — transient molecules that exist for only thousandths of a second or less during chemical reactions. Characterization of such “reaction intermediates” can play a key role in understanding the mechanisms by which molecules change, shedding light on processes ranging from basic chemical reactions to complex diseases such as Alzheimer’s. Yet by their very nature, reaction intermediates exist for brief periods too short to be seen by most

Fruits and veggies grown organically show significantly higher levels of cancer-fighting antioxidants than conventionally grown foods, according to a new study of corn, strawberries and marionberries. The research suggests that pesticides and herbicides actually thwart the production of phenolics — chemicals that act as a plant’s natural defense and also happen to be good for our health. Fertilizers, however, seem to boost the levels of anti-cancer compounds.

The findings appear in the

Concern is rising among governments worldwide about electronic wastes — discarded computers, televisions, cell phones, audio equipment and batteries — leaching lead and other substances that may seep into groundwater supplies.

Just one color computer monitor or television can contain up to eight pounds of lead. Consider that amount in light of the estimated 12 million tons of “e-wastes” that the U.S. Environmental Protection Agency estimates may soon be dumped into American landfills.

Researchers at the University of Rochester have created the highest resolution optical image ever, revealing structures as small as carbon nanotubes just a few billionths of an inch across. The new method should open the door to previously inaccessible chemical and structural information in samples as small as the proteins embedded in a cell’s membrane. The research appears in today’s issue of Physical Review Letters.

“This is the highest resolution optical spectroscopic measuremen

Genomic rearrangements discovered using DNA microarrays are expected to reveal genetic regions important to human health

Mountain View, CA ¾ March 3, 2003 ¾ Perlegen Sciences, Inc. today announced the publication of a scientific paper in the latest issue of the peer-reviewed journal Genome Research. The paper, “Genomic DNA insertions and deletions occur frequently between humans and nonhuman primates,” describes novel findings suggesting that genomic rearrangements, not single base pa

Researchers at Cedars-Sinai’s Maxine Dunitz Neurosurgical Institute are working to develop a non-surgical approach to brain cancer that uses radiation and the injection of specially cultured bone marrow cells into the tumor. The combination sets in motion a local and systemic immune response to kill surviving tumor cells.

The novel approach has provided promising results in a study on rats, described in the March 3 issue of the Journal of Immunotherapy. Human trials are expected to beg