Daily Telegraph (London, England: daily circulation 686,679)

“Gel for decayed teeth 'could spell end to fillings'”

July 28, 2010

Origin: Office of Public Affairs (OPA) PressPac

 

A gel that can help decayed teeth grow back in weeks could signal an end to fillings. French scientists said the gel works by prompting cells in teeth to start multiplying. They claim that in laboratory studies it took just one month to restore teeth back to their original state. The French team mixed MSH with a chemical called poly-L-glutamic acid. The mixture was then turned into a gel and rubbed on to cells taken from extracted human teeth. In a separate experiment, the scientists applied the gel to the teeth of mice with dental cavities. In just one month, the cavities had disappeared. The gel is still undergoing testing but could be available for use within three to five years. Their findings are published in the American Chemical Society journal ACS Nano.

 

The Medical News (Sydney, Australia: 441,800 monthly unique users)

“ACS names Chemistry Nobel Laureate as winner of 2011 Priestley Medal”

July 28, 2010

Origin: OPA press release

 

Ahmed H. Zewail, Ph.D., 1999 Chemistry Nobel Laureate and Linus Pauling Professor of Chemistry & Professor of Physics at the California Institute of Technology, has been named winner of the 2011 Priestley Medal by the American Chemical Society (ACS). The award recognizes Zewail's revolutionary methods for developing "ultraslow-motion" imaging for the study of ultrafast processes in chemistry, biology and materials science. His work is providing deep new insights into materials behavior and biological processes that determine health and disease. The annual award, the highest honor bestowed by ACS, consists of a gold medallion designed to commemorate the work of Joseph Priestley as well as a presentation box and a certificate.

 

The Guardian (London, England: daily circulation 283,063)

“Sparks fly over study suggesting wildfires cut CO2”

July 29, 2010

 

Call it a hot topic. A study suggesting that intentional forest blazes could significantly cut carbon dioxide (CO2) emissions from wildfires in the Western United States has prompted a piquant scholarly quarrel. The exchange highlights the challenge forest managers may face in balancing plans to use fire to restore forest ecosystems with efforts to curb carbon emissions. Forests have emerged as a key player in climate change because trees can suck huge amounts of CO2 out of the atmosphere and "sequester" the carbon for decades. Christine Wiedinmyer of the National Center for Atmospheric Research in Boulder, Colorado and Matthew Hurteau Northern Arizona University in Flagstaff, Arizona, estimated how much CO2 had been released by wildfires in the western U.S. from 2001 to 2008. Then, they estimated what the total might have been if the wildfires had been replaced by cooler, more controlled prescribed burns. The result, they reported in the 11 February online issue of Environmental Science & Technology (ES&T), is that the planned fires might have cut CO2 emissions by 18% to 25% in the western U.S., and by as much as 60% in specific forest types.

 

Environmental Protection Magazine (Dallas, Tex.)

“Lake Trout Seem to Have More Mercury Now, Study Says”

July 28, 2010

Origin: OPA PressPac

 

Mercury levels in a popular species of game fish in Lake Erie are increasing after two decades of steady decline, scientists are reporting. The study, the most comprehensive to date on mercury levels in Great Lakes fish, is in Environmental Science & Technology, a semi-monthly journal. Satyendra Bhavsar, Ph.D., from the Ontario Ministry of the Environment, and colleagues note that the Great Lakes is the largest group of freshwater lakes in the world. The lakes are of significant economic importance to the United States and Canada due to the area’s $7 billion fishing industry. The scientists studied mercury levels in 5,807 fish samples collected from the lakes between the 1970s and 2007. The samples included lake trout and walleye, two of the most common species of game fish caught in the region. The researchers found that mercury levels in the fish steadily declined from the mid-1970s to 2007 in the upper Great Lakes (Superior and Huron).

 

South Florida Sun-Sentinel (Fort Lauderdale, Fla.: daily circulation 226,591)

“What is Green Exercise?”

July 27, 2010

Origin: OPA press release

 

Trying to decide on an activity to keep yourself healthy this summer? Try green exercise. Green exercise refers to physical activity that is done while simultaneously being exposed to nature. Various forms of green exercise include hiking, biking, outdoor sports or beach activities. The University of Essex in the United Kingdom has been studying the health benefits of green exercise for more than five years and has published a recent paper on this topic. This study has been published in the journal Environmental Science and Technology, and shows that as little as five minutes of green exercise improves both mood and self-esteem.

 

Technology Review (Cambridge, Mass.: bi-monthly circulation 315,000)

“A Boost for Battery Life and Capacity”

July 28, 2010

 

A new chemical trick for making nanostructured materials could help increase the range and reliability of electric cars and lead to better batteries that could help stabilize the power grid. Researchers at the Pacific Northwest National Laboratory (PNNL) in Richland, WA, have developed the technique, which can turn a potential electrode material that cannot normally store electricity into one that stores more energy than similar battery materials already on the market. In work published in the journal Nano Letters, the PNNL researchers show that paraffin wax and oleic acid encourages the growth of platelike nanostructures of lithium-manganese phosphate. These "nanoplates" are small and thin, allowing electrons and ions (atoms or molecules with a positive or negative charge) to move in and out of them easily. This turns the material--which ordinarily doesn't work as a battery material because of its very poor conductivity--into one that stores large amounts of electricity.

 

Medical News Today (U.K.: 1.1 million monthly unique users)

“Humble Protein, Nanoparticles Tag-Team To Kill Cancer Cells”

July 28, 2010

 

A normally benign protein found in the human body appears to be able when paired with nanoparticles to zero in on and kill certain cancer cells, without having to also load those particles with chemotherapy drugs. The finding could lead to a new strategy for targeted cancer therapies, according to the University of North Carolina at Chapel  Hill scientists who made the discovery. The discovery was made by a team of researchers led by Joseph DeSimone, Ph.D., Chancellor's Eminent Professor of Chemistry in UNC's College of Arts and Sciences and William R. Kenan Jr. Distinguished Professor of Chemical Engineering at North Carolina State  University, along with Jin Wang, Ph.D., and Shaomin Tian, Ph.D., in DeSimone's lab. Their findings appear in this week's online issue of the Journal of the American Chemical Society.

 

… From the Blogs

 

Science Magazine News

“Nano Parfait a Treat for Scientists: Researchers Spin Pure Batches of Nanotubes Species”

July 27, 2010

 

One team, led by Rice Professor Junichiro Kono and graduate students Erik Haroz and William Rice, has made a small but significant step toward the dream of an efficient nationwide electrical grid that depends on highly conductive quantum nanowire. Kono's lab reported its results recently in the online edition of ACS Nano. Kono is a professor in electrical and computer engineering and professor of physics and astronomy.

 

Centers for Ocean Sciences Education Excellence

“Electroshocking Fish: In-Seine? No. Safe, Educational? Yes”

July 27, 2010

 

Olcott, or Olcott Beach as the locals in this lakeside Niagara County hamlet refer to it, is home to the deepest harbor on Lake Ontario west of Rochester… In a two-year NYSG-funded study that wrapped up late last year, University at Buffalo investigator Joe Atkinson and his team created a web-based tool that allows scientists and managers to plot a resource shed for Lake Ontario or Lake Erie at any location of interest. After undergoing testing off-and-on for about a year, Atkinson said, “This tool will be able to plot resource sheds not only for the long-term average hydrodynamic conditions originally proposed but also for a set of historic conditions, for years since about 2000.” His team’s findings were published earlier this year in an Environmental Science and Technology journal article.