Pesticides may promote Parkinson's disease and exercise may offer protection
...n past studies, the researchers reported that rats forced to use limbs that mimicked the effects of Parkinso...xamined the rats' brains, they found that the rats forced to be active had lost fewer dopamine neurons than the sedentary rats. "There was a problem with the......native trout of more than 80% of their diet. This forced the native fish to feed primarily on insect larvae that live on the stream bottom, which decreased adult insects emerging from the stream to the forest. In turn, this caused a 65% reduction in forest spiders that, like other forest-dwellers such as ...Global warming's impact on US plants, animals determined from review of dozens of studies
AUSTIN, Texas--Global warming has forced U.S. plants and animals to change their behavior in recent decades in ways that can be harmful, according to a new report prepared for the Pew Center on Global Climate Change. The Pew Center review of more than 40 studies is co-authored by Camille P...'Lighter than air' breathing more than doubles COPD patients' exercise endurance
... capacity, as reflected by the increase in resting forced expiratory volume and by the increase in tidal volume, mean expiratory flow, and minute ventilation at peak exercise. Importantly, the improvement in maximal expiratory flow determined a significant reduction in lung dynamic hyperinflation and dyspne...New pheromone creates buzz about the clout of older bees
...d care, thanks to some boosted blood protein. Bees forced out too early aren't great navigators, and since foraging is dangerous, they risk dying before their time. "Our idea has never been disproved, but the lack of mechanism drove me crazy," said Huang. "Now we know the specific chemical that controls ...Impulsive behavior may be relict of hunter-gatherer past
...ch or more food in the long run as birds that were forced to wait for the larger reward or to follow a mixed strategy. The reason, he said, was that in the wild, animals aren't faced with an either-or choice of "small reward now or big reward later." What happens is that when they find a small bit of food, ...Study reveals developing countries with recipe for thriving health biotech industries
...pse of the Soviet Union and the U.S. trade embargo forced it to develop its home-grown solutions to local health problems. After Cuban scientists trained in labs around the world in the early 1980s, Cuban research and development programs led to the first and only vaccine for a strain of meningitis and stem...Hospital epidemiologists trace outbreak of organism to commonly used wound care equipment
... noted. "To solve the problem, we are increasingly forced to rely on our basic tools of scientific investigation: finding the initial contact point, or source, of infection and putting in place the necessary steps to prevent an outbreak from happening in the first place." The investigation began with an imm...... optimum the plankton do not grow, but they can be forced into action by noise, and once they are stimulated the whole system is activated and a marine landscape is quickly blanketed by the bloom. Zhou's results suggest that without noise such blooms might be physically unable to flourish in some areas or m...Brain region learns to anticipate risk, provides early warnings. suggests new study in Science
...djudicate between them and do so in a way where we forced each one to make predictions that we only tested after the fact," Brown said. "By integrating the theory, the computational simulation and then the fMRI testing, we are providing other scientists with some very rigorous evidence that our new theory i...Biologists discover why 10% of Europeans are safe from HIV infection
... this disease provided the selection pressure that forced up the frequency of the mutation from 1 in 20,000 at the time of the Black Death to values today of 1 in 10. Lethal, viral haemorrhagic fevers were recorded in the Nile valley from 1500 BC and were followed by the plagues of Mesopotamia (700-450BC),...Computer program helps farmers make decisions about pastureland
... when trying the computer model, the farmer is not forced to invest anything more than a few minutes of time to test the potential improvements to be gained from rotational grazing." Using PLMS, a farmer can explore using intensive grazing, manipulating stocking rates, and modifying forage species to improv...TEL2 gene cooperates with MYC gene to provoke B-cell lymphomas
...were over-expressing MYC," Grosveld said. "When we forced over-expression of TEL2 in these mice, we curtaile... in the precancerous B lymphocytes that were being forced to multiply by MYC." But even the combined effect of MYC and TEL2 wasn't enough to turn these overa...Octopuses occasionally stroll around on two arms, UC Berkeley biologists report
...anging both color and shape, but when startled and forced to move quickly, they have to give up their camouflage. Not so when walking. "This bipedal behavior allows them to get away and remain cryptic," said Huffard. An octopus is basically a water-filled balloon, keeping its shape not with an internal or ...Immune cells in the liver take a ride
...ly, conventional theory held that these cells were forced from the blood into the tissues, where they did their specialized work. "This is the first example of a system in which a cell's surveillance for antigen is intravascular rather than within a tissue," says Dr. Littman. Second, the NKT cells app...At the molecular level, the predator is the prey
... by the rough skinned newt, Taricha granulosa, has forced several evolutionary changes in the garter snake Thamnophis sirtalis or, more specifically, in the snake nerve cell protein that endures the toxin's attacks. Embedded in the surface of garter snake nerve cells is tsNa(V)1.4, a tube-shaped protein tha...Researchers find new giant amphibian fossils in Africa
...erate climates of these other communities may have forced them to evolve independently and in relative isolation from the Niger fauna." The two species of amphibians discovered are similar to crocodiles in shape. Nigerpeton ricglesi had rounded noses, with small eyes and both small and large fang-like teet...Spontaneous ignition discovery has ORNL researcher fired up
...ess have created a lot of problems that we're then forced to deal with," said Hu, a physicist in the Life Sciences Division of the Department of Energy's ORNL. Citing the wisdom of one of the all-time great scientists, Hu noted that Albert Einstein once said, "Problems cannot be solved at the same level of ...Wild grasses and man-made wheats advance research capabilities
...bioticand abiotic stresses," Rudd said. "I'm being forced to find broader genepools to bring in the genetic variability I believe is necessary for thegene pool here." Karnal bunt, new races of Hessian fly, new leaf rust, stripe rust andRussian wheat aphid, as well as the need for more drought tolerancepr...... was of a male with a 15 percent larger one. This forced a female to make a pre-mating sexual selection. After testing each individual and devoting over 1,000 minutes of observation, Langerhans found that it wasn't even close. "They chose the larger one over and over," Langerhans said. "All fema...