Dietary supplement shows promise for improving immune function in the elderly
...ge, has been postulated to account for some of the decline of the immune system that is seen in the elderly. ...e costs also increases. Aging is associated with a decline in a large number of bodily functions, the most important of which is immune function. Numerous chan...Prenatal nicotine primes adolescent brain for addiction
...ne before birth suffered loss of brain cells and a decline in brain activity that persisted throughout adoles...tylcholine. The earlier exposure also worsened the decline in brain activity during nicotine withdrawal and led to an increase in the amount of brain cell inju...Report in BioScience details global decline of nonmarine mollusks
...charismatic vertebrate species. The extraordinary decline of nonmarine mollusks is due directly to habitat destruction and disruption of natural ecosystem processes. As an integral component of healthy ecosystems, molluscan diversity is valuable both for its own sake and as an indicator of conditions that ...Eastern lowland gorilla population plummets 70 percent since 1994
...e eastern lowland gorilla underscores the alarming decline of an entire ecosystem," said Juan Carlos Bonilla, senior director for Central Africa at Conservation International. "But this joint effort which includes everyone from tribal chiefs to non-governmental organizations and national governments repres...Policy review in Science calls for Bush Administration to protect wild salmon
...the net effect of hatcheries usually is to cause a decline in wild salmon. The World Conservation Union (IUCN) has also concluded, based on scientific consensus from research on land-dwelling species, that reliance on artificially-raised individuals is imprudent and cannot work in the long term. Immediate ...Tigers: Big cats need cat food
...ret world of the tiger." "Our results confirm that decline of wild tigers is primarily driven by prey-depletion caused by human hunters," Karanth added. "Conservationists should direct their concerns at reducing such negative human impacts."WCS's conservation efforts to save tigers in India and throughout t......ttees draw a link between phthalate intake and the decline which has been observed for several decades in human sperm counts and thus male fertility. The rise in testicular cancer and male genital deformities has also been discussed in connection with phthalate exposure. The researchers from Erlangen have ...Lion attacks on livestock in Africa are significant but manageable
...he number alive just 25 years ago. "Most of this decline can be attributed to conflicts with an expanding human population, specifically to ranchers killing lions that attack their livestock," said Bruce Patterson, PhD, MacArthur Curator of Mammals at Chicago's Field Museum and author of a new study analyz...More evidence of major global extinctions
...d in the twenty-year period. This compares to 71% decline in butterfly species (over about 20 years) and 28% of plant species (over about 40 years). The fact that these losses are found in butterflies and plants, as well as birds, shows how all-embracing have been the impacts of human activities on wildlif...Death and resurrection on Caribbean reefs
...y of a reef system in Jamaica. They found that the decline of coral in recent decades was unprecedented in the last thousand years. Richard Aronson, a Senior Marine Scientist at the Sea Lab, was one of the authors of the study. "Ecologists are now realizing the full extent of damage to Caribbean reefs, with...Plant, bird and butterfly species dwindling in the United Kingdom, researchers report
...ite over many years corresponded to an incremental decline in species richness. The authors estimate that Ag...gh the rate of nitrogen deposition is beginning to decline in many areas of Europe and North America, recovery will likely be very slow, according to the scien...Undisturbed Amazonian forests are changing, say scientists
...er trees that live in the forest understory." "The decline of many small trees is intriguing because they tend to be so specialized," said Henrique Nascimento, a Brazilian researcher at the Smithsonian Tropical Research Institute. "They live in the dark interior of the forest, and are the only trees that can...MGH study finds female mammals produce egg cells into adulthood
...ontinue to look the same. It was assumed that the decline in total follicles represented the gradual disappearance of a limited supply of oocytes. No one ever attempted to measure the actual rate of oocyte or follicle death before because the dogma was so persuasive," he explains. Among many potential impl...Pacific leatherback turtle could go extinct in 10 years
... ago. But scientists have documented a precipitous decline of the Pacific leatherback in the past two decades...ive females to fewer than 3,000 remaining today, a decline of 97 percent. "On land, the canary in the coal mine warns humans of impending environmental danger,...New Seascape initiative stretches from Costa Rica to Ecuador and protects key marine habitats
...leatherback turtle, which has seen its populations decline in the Eastern Pacific by more than 97 percent in the last two decades. The Seascape addresses the threat by incorporating Costa Rica's Baulas de Guanacaste National Park and its surrounding waters one of the leatherback's last nesting grounds on th...Drug addiction, learning share common brain protein
...ice more responsive to the effects of cocaine, the decline in PSD-95 occurred only in the striatum, while levels of the protein in other brain regions remained unaffected. In normal mice, the protein shift occurred after three injections of cocaine and lasted for more than two months. The researchers also m...DHEA boosts growth rate of human neural stem cells
... steroids in the blood of young humans, but levels decline with age and its physiological effects are poorly understood. A synthetic form of the hormone is sold over-the-counter. Its supposed benefits range from antiaging properties to the prevention of cancer and heart disease, and serving as a supplement t...U.S. commission makes dramatic recommendations for ocean health
...eans Commission released recommendations "to avert decline of ocean wildlife and collapse of ocean ecosystems." It calls for immediate reform of U.S. ocean laws and policies to restore ocean wildlife, protect ocean ecosystems, and preserve the ecological, economic and social benefits the oceans provide in e...New technologies reveal mysteries of marine megafauna
...oss on an island each year. Then there would be a decline one year and we wouldn't know why. Now we can track where they go when they leave the island, and see where they are coming in contact with longlining vessels or other dangers." The new data allow scientists to discern patterns in marine animal mov......Natural Resources and co-author of the paper. "Any decline in vegetation makes it more difficult for sheep to move among the different habitat clusters, which have become fewer and more spread out. Where they used to be able to move more readily to other mountain ranges to help repopulate or recolonize a hab...