Muddy Mayan mystery made clearer by researchers working in the bajos
...lasting" human-induced environmental changes "ever documented in the pre-Columbian New World." The team bases their conclusions on data collected during on-site investigations near La Milpa in northwestern Belize, in 1997 and 1998, and between Yaxha and Tikal, in northeastern Guatemala, in 1999. They studied t...U of C researcher tracks path of flying snake
...is subject: a flying snake expert. Scientists have documented the existence of these animals for only a century, but legends of "winged snakes" go as far back as Herodotus, a Greek historian in the fifth century BC. Most flying snakes grow 3 to 4 feet long and live in the trees in the lowland tropical rainfores...Peptide suppresses multiple sclerosis-like disease
... treatment for the disease, which has been documented for 130 years. Kaumaya, professor of obstetrics and gynecology and microbiology and a cancer researcher in Ohio State's Comprehensive Cancer Center, is principal collab...Evolution of language: FOXP2 and human uniqueness in religious perspective
...periments were successful enough that some reports documented chimpanzee improvisation of signs, conversations among chimpanzees (apart from human participation), and teaching of ASL to other chimpanzees. "The apparent genetic similarities in FOXP2 in humans and apes may be an alarming challenge to human unique...Scientists confirm age of the oldest meteorite collision on Earth
...ly the same age as the ancient meteorite collision documented in the Science study. Could the meteorite somehow have contributed to origin of bacterial life on Earth? Lowe has his doubts: "It's quite possible that life evolved as far back as 4.3 billion years ago, shortly after the Earth had formed." He als...A message from nature to muskrats: 'Dont chill out'
...ion during immersion. Conclusions This study documented few behavioural or metabolic changes in dive performance related to hypothermia in adult muskrats. While implying there is no energetic benefit to muskrats diving with a reduced Tb, this finding also suggests an impressive resistance to the effects ...Loblolly pine open for genetic engineering, research shows
...aid. Acceptable rates of transformation have been documented in other pines such as Afghan, Virginia and Monterey but not in loblolly, she noted. "There is a broad spectrum of applicability for this technology in the genetic improvement of all commercial pines," Gould said....Science picks - leads, feeds and story seeds
... increasingly on the rise. Currently, the USGS has documented nearly 120 different avian species as having been infected. Some of these species are endangered, raising additional concerns for the spread of this non-native disease. Follow this link ( http://www.nwhc.usgs.gov/research/west_nile/wnvaffected.html...Scientists identify 'genetic signature' of stem cells
...ose in cells that did not support stem cells. They documented the activity of more than 4,000 genes in the stem cell supportive cells, but not in the others. Not all those genes are necessarily critical for supporting stem cells, but any that are required are almost certainly part of that group, said Moore. "It...Colorado U. to fly hardware, experiments on space shuttle, space station
...ning kidney cells. Previous BioServe flights have documented changes in kidney cells and how the genes are expressed to produce particular proteins, said Stodieck. "Now we want to learn more about what is happening at the molecular level to control the behavior of the cells in space and on the ground. "Ulti...Increasing nitrogen in Earth's soils may signal global changes, say U. of Colorado researchers
...re, and therefore future climate." Scientists have documented increases in how much C02 is being produced by human activity, and concluded that only about half of that amount is reaching the atmosphere, said Townsend. So the carbon sinks on Earth taking up and storing the carbon molecules in the world's vegeta...McLean Hospital and Repligen announce results of brain imaging study of secretin
...n of the amygdala in patients with autism has been documented using fMRI with specific impairment noted in their ability to respond to facial expressions of fear. Other studies indicate that patients with either surgical or congenital amygdala damage show similar face recognition defects. Lack of activation of...Lower insulin sensitivity found In Mexican-Americans, regardless of behavioral and metabolic factors
...not entirely resolved given that studies that have documented diminished insulin sensitivity in non-obese, non-diabetic Mexican-Americans compared with NHW utilized less sensitive methods to estimated Mexican-American body fat and central adiposity (obesity). Furthermore, the possible contribution of lower phys...Screening certain infants can be lifesaving, Wake Forest study shows
...rmulas; older children follow similar diets. They documented long-term survival of the children on the special diet. Now, said Ibdah, they are reporting that moving in quickly by screening infants born to mothers with acute fatty liver of pregnancy before symptoms develop can be lifesaving -- though children ...When it comes to sperm competition, size can matterits the female who holds the aces
... 15 years. In a 1995 study published in Nature, he documented the longest sperm cell known to science. It belong...ion to fertilize eggs," Pitnick says. "In 1995, we documented exceptions to the rule. That finding led us to wonder why some species take the time to produce a fe...Zinc supplementation reduces diarrhea and death in Bangladeshi children
...iarrhea episodes in 8,070 Bangladeshi children and documented signifi-cantly lower rates of child morbidity, hospitalization and non-injury death in children treated with zinc. The incidence of diarrhea was significantly less and non-injury deaths were 50% less in children residing in areas randomized to receiv...Infection with second strain of HIV compromises treatment
...hese problems," he said. Although the emergence of documented cases of superinfection suggests that no single HIV vaccine is likely to be completely effective for all strains of the virus, "if patients develop even partially effective cellular immunity, they may end up with lower viral load than they would othe...Promising biomarker for melanoma is identified
...Group at New York University Medical Center, which documented important characteristics of each patient's original tumor, such as its location and thickness. After treatment, the patients were followed for many years. A new, prospective NYU-Interdisciplinary Melanoma Cooperative Group has been accruing p...Zebrafish may point the way to mending a broken heart
... to repair damaged human hearts. Many studies have documented that various invertebrates can regenerate vital organs. But most vertebrates and all mammals develop scarring in response to cardiac injury, with minimal regeneration of heart muscle. In an article published in the December 13, 2002, issue of the jou...Field Museum uncovers evidence behind man-eating; revises legend of its infamous man-eating lions
...-escalating, figures, ranging from 14 to 135, were documented by Patterson, himself, during the course of his ca...re typically sub-adult or prime-ages males without documented injury. In fact the researchers have even used forensic techniques to analyze the last meals of the...