COPD is forgotten killer, says University of Toronto professor
...n as men," says Chapman. At present, Canadian data show that 3.6 per cent of women 35 or older suffer from COPD, compared with 2.8 per cent of men. Chapman's typical patient with COPD was once an elderly male. Today, it is a middle-aged woman....New version of premier global climate model released
...les, power plants, and other sources. Observations show that atmospheric levels of carbon dioxide have increased from 280 parts per million by volume (ppmv) in preindustrial times to more than 370 ppmv today, and the increase is continuing. A doubling of carbon dioxide over present-day levels would signi...Next best thing: wood chip bedding for cattle
...004 issue of the Journal of Environmental Quality, show that overall the emissions of greenhouse gases (carbon dioxide, methane and nitrous oxide) were quite similar for the two types of bedding during open windrow composting. Recently, the lumber industry has been promoting the use of wood chips ...Physicists reveal first 'nanoflowers'
...ics, said: "Science can be beautiful. These images show cutting edge nanotechnology research but are strikingly images in their own right. Maybe science and art aren't so different after all."...Stonehenge study tells pagans and historians it's good to talk
...esentations of sites such as Stonehenge invariably show them as dramatic ruins in splendid isolation, removing any signs of people or present-day activity. And the emphasis on such things as visitor centres and 'interpretation' handed out to nave visitors, suggests a 'top-down' approach by middle-class he...Protein stops blood-vessel growth, holds promise as cancer therapy
... vessels, a process known as tubulation. They also show that high levels of fibulin-5 could prevent the sprouting of new blood vessels by inhibiting the proliferation and movement of endothelial cells. Fibulin-5 interfered with signaling by the proangiogenic factor VEGF, and increased levels of the antia...Antioxidants during pregnancy may help prevent birth defects tied to alcohol
...Institute on Alcohol Abuse and Alcoholism (NIAAA), show that the number of American adults age 18 years and older who abuse alcohol or are alcohol dependent rose from 13.8 million (7.41 percent) in 1991-1992 to 17.6 million (8.46 percent) in 2001-2002. "There is no 'magic number' as to a safe ver...Harmless virus helps slow HIV by boosting immune proteins
...ent of people with HIV, according to some studies, show evidence of having been infected with GBV-C, but about half of these patients develop antibodies that knock the virus out of their system. GBV-C was first identified by scientists in 1995, though studies suggest it has been around since ancient time......eloped mice lacking the protein. They were able to show that these mice were fertile, something that would not be possible if Mus81 performed the function it was originally believed to have. Researchers now are exploring whether cancer patients have the Mus81 mutation. If the mutation can be tied to huma...Scientists learn how adjuvant makes vaccines effective
...ot yet completely characterized them. But they did show that the Gr1 cells secrete interleukin-4 and that both the Gr1 cells and the interleukin-4 are necessary for the priming of the B cells. When they inactivated the Gr1 cells, mice responded to a vaccine containing the adjuvant with fewer B cells and f...Mammoths stranded on Bering Sea island delayed extinction
...n the Pribilofs survived and new radiocarbon dates show how. It was a matter of being in the right place ...Radiocarbon-dated samples from St. Lawrence Island show similar dates of extinction to the mainland," Guthrie said, "but a sample from St. Paul dates to onl...Survival of the fastest: scientists 'selectively breed' winning Formula One cars
...ars to produce the ultimate configuration. Results show it's possible to shave 0.88 of a second per lap from the best time. In an industry where 1/100th of a second can separate a winner from a loser, that can make all the difference. Dr. Peter Bentley, leader of the Digital Biology Group at UCL's Departm...Espionage may have driven the evolution of bee language according to UCSD-led study in Brazil
...in Proceedings of the Royal Society in August. "We show that foragers of an aggressive species searching for an unscented food source at a new location, detected and preferentially oriented to odor marks deposited by a competitor and then rapidly dominated the food source, killing or driving off all of th...Monkey business: Studies show tiny callimicos have unusual characteristics
...in the wild. Among other things, her observations show callimicos eat fungi during the dry season, making them the only tropical primate species to subsist on this food source for part of the year. They also have a different reproductive strategy from other small New World monkeys. Callimicos (Latin for...Study probes ecosystem of tree holes
...e three he and Chase studied. "Our results show that if you change any one of the three factors, you alter the face of the community," Kneitel said. "We found that we had a group of species that were good competitors, another that is good at tolerating predators, and yet another that can survive ...JCI table of contents, 15 June 2004
... Dezawa and colleagues, from Kyoto University, now show that adult stem cells from bone marrow can also be...ady known that about one half of all liver cancers show a decrease or loss of expression of the PTEN gene. Surprisingly, however, Akira Suzuki and collabora...... Dezawa and colleagues, from Kyoto University, now show that adult stem cells from bone marrow can also be changed into neuronal cells and that these cells benefited a Parkinson disease rat model. The authors induced the bone marrow cells to become neuronal cells by transferring a portion of a gene called...'Rolling Store' provides model for overcoming barriers to healthy foods and better health outcomes
...this enthusiasm, together with the study findings, show that the Rolling Store approach to the prevention of weight gain is a realistic, inexpensive meansto overcome both economic and geographic barriers to healthy diets in poor, rural people and increase the likelihood of healthier lives. She believes th...Existing drug may prevent brain injury and seizures in newborns
...han the untreated rats. The researchers went on to show that topiramate does not affect the normal development of oligodendrocytes. "The finding that treatment with a drug prevents injury when given after the insult is tremendously significant," says Jensen, of the Department of Neurology and Progra....... But the longer-term data presented in this study show the remarkable recovery and resilience of the water quality and the finfish and shellfish inhabitants. The paper shows that although less water volume was delivered by Hurricane Fran, large amounts of fish kills were reported due to oxygen depletion ...