829,918 articles

Getting plants to rid themselves of pesticide residues

Scientists in China are reporting the "intriguing" discovery that a natural plant hormone, applied to crops, can help plants eliminate residues of certain pesticides. The study is scheduled for the Sept. 23 issue of ACS' Journal of Agricultural and Food Chemistry, a bi-weekly publication.

Global warming causes outbreak of rare algae associated with corals, study finds

Scientists have found a rare species of algae that is tolerant of stressful environmental conditions and that proliferated in Caribbean corals when the corals' more-sensitive algae were being expelled during the sea-temperature warming of 2005. The research is one of the first times that anyone has had the opportunity to conduct a community-wide study of corals and algae before, during and after...

Graphitic memory techniques advance at Rice

Advances by the Rice University lab of James Tour have brought graphite's potential as a mass data storage medium a step closer to reality and created the potential for reprogrammable gate arrays that could bring about a revolution in integrated circuit logic design.

Health journalists utilize audience, other media to build news agenda

To identify how the demand for health stories is met, University of Missouri researchers surveyed national health journalists about their development of story ideas and use of expert sources and public relations materials. The researchers found that health journalists determine what information is newsworthy by examining the work of their peers and the issues raised by their colleagues and...

Hubble Opens New Eyes On The Universe

NASA's Hubble Space Telescope is back in business, ready to uncover new worlds, peer ever deeper into space, and even map the invisible backbone of the universe. The first snapshots from the refurbished Hubble showcase the 19-year-old telescope's new vision. Topping the list of exciting new views are colorful multi-wavelength pictures of far- flung galaxies, a densely packed star cluster, an eerie...

Individual cells isolated from biological clock can keep daily time, but are unreliable

Washington University in St. Louis researchers have shown that individual cells isolated from the biological clock can keep daily time all by themselves. However, by themselves, they are unreliable. The neurons get out of synch. The 20,000 neurons comprising the biological clock, remarkably, contain the machinery to generate daily, or circadian, rhythms in gene expression and electrical activity....

Learning addiction: Dopamine reinforces drug-associated memories

New research with mice has provided some fascinating insight into how addictive drugs hijack reward signals and influence neural processes associated with learning and memory. The research, published by Cell Press in the Sept. 10 issue of the journal Neuron, helps to explain why and how drug-associated memories, such as the place of drug use, drive and perpetuate the addiction.

LED Light And Green Tea Cream Smooth Facial Wrinkles

Scientists are reporting a major improvement in their potential new treatment for facial wrinkles that could emerge as an alternative to Botox and cosmetic surgery. The noninvasive technique combines high-intensity light from light-emitting diodes (LEDs) and a lotion made of green tea extract. It works 10 times faster than a similar anti-wrinkle treatment that uses LEDs alone, the researchers...

Light at the speed of a bicycle and much more

The Institute of Physics and the Engineering and Physical Sciences Research Council are launching a new report today, Wednesday, Sept. 9, entitled "Optics and photonics: Physics enhancing our lives," to highlight the most recent advances in the field of optics and photonics and demonstrate the potentially lucrative ends a range of researchers have in sight.

Magnetic fields play larger role in star formation than previously thought

The simple picture of star formation calls for giant clouds of gas and dust to collapse inward due to gravity, growing denser and hotter until igniting nuclear fusion. In reality, forces other than gravity also influence the birth of stars. New research shows that cosmic magnetic fields play a more important role in star formation than previously thought.