Climate change isolates Rocky Mountain butterflies
...rtant to study movement among populations that are becoming more and isolated due to shrinking habitats; but, ...dent of each otheras we've shown the Parnassius is becoming in certain areas in the Canadian Rockiesthe local extinction rate of small populations will increase...Pollution causes 40 percent of deaths worldwide, study finds
...ious toxins. At the same time, more microbes are becoming increasingly drug-resistant. And global warming, together with changes in biological diversity, influence parasite evolution and the ability of exotic species to invade new areas. As a result, such diseases as tuberculosis and influenza are re-emergi...Research shows skeleton to be endocrine organ
...cin activity were prevented from gaining weight or becoming diabetic even when they ate a high fat diet. Analysis of mice lacking the osteocalcin protein showed that they had type 2 diabetes, increased fat mass, a decrease in insulin and adiponectin expression, and decreased beta-cell proliferation. This r...Secret life of elephant seals not secret anymore!
...ld determine where the seals were gaining fat (and becoming more buoyant) and where food was harder to find and the animals lost fat. These measurements have allowed us for the first time to make circumpolar maps of the areas that provide good foraging for seals, and areas where conditions are less favourab...Lost forest yields several new species
...e country (then called Zaire). Kabila succeeded in becoming president himself in 1996, the same year which plunged the region into a state of civil war. As a result, the region has been off limits to conservationists until recently. Human impacts to the region are currently low, with gold mining on a minor...UCLA scientists produce functioning neurons from human embryonic stem cells
...in express different genes. The cell line prone to becoming neurons found in the forebrain expressed genes typically found those neurons, while the other line expressed genes found in the rear brain and spinal cord. Sun and her team now are studying why the two human embryonic stem cell lines have biases t...UCF research links proteins, stem cells and potential Alzheimer's treatment
... a hallmark of Alzheimers, prevent stem cells from becoming neurons. The research team treated Alzheimers-model mice producing human APP with phenserine, which is known to reduce the amount of APP in the brain. The APP level in the brain of treated mice was reduced by up to 50 percent, which would provide ...See what you're spewing as you speed along
...apply this approach in the real world are only now becoming available, added Dr Martin. We have already constructed a battery-powered roadside unit using the same technology, employing rugged and robust telecommunications components. The next steps will be to fully quantify the technique and add additional ...Beyond Mesopotamia: A radical new view of human civilization reported in Science
...starting to sketch out this new landscape, but its becoming clear that these centers traded goods and could have shared technology and architecture. Recovered artifacts such as beads, shells, vessels, seals and game boards show that a network linked these civilizations. Researchers have also found hints, su...Einstein researchers' prototype vaccine could provide improved protection against tuberculosis
...mmune response by mopping up the bacteria and then becoming memory cells that can respond swiftly if the same bacterial species infects the person later on. In designing their TB vaccine, the Einstein researchers discovered a gene in M. tuberculosis, known as secA2, that the TB bacteria rely on to prevent ...Handicapping tuberculosis may be the way to a better vaccine
.... In addition, resistance to current treatments is becoming increasingly common, making an effective vaccine all the more crucial. Were very excited because this is the first vaccine strain weve ever seen that is significantly better than BCG, said Jacobs. Jacobs worked in collaboration with Steven Porcelli...Molecule blocks gene, sheds light on liver cancer
...nounced P-TEN), which normally protects cells from becoming cancerous. Researchers know that the abnormal silencing of this tumor-suppressor gene contributes to the development of liver cancer and other malignancies. The findings help explain how liver cancer develops and may identify new drug targets for ...First case of successful ovarian tissue transplantation between two, nonidentical sisters
...plantation from her sister to give her a chance of becoming pregnant. Prof Donnez said: Having already provided bone marrow in 1990, her sister, who was now aged 32 and had never become pregnant, badly wanted to help her sister by donating some of her own ovarian tissue. Although the option of oocyte dona...MGH researchers confirm that bone marrow restores fertility in female mice
...toring fertility did not involve cells destined to becoming fertilizable eggs. To further investigate this observation, the MGH-Vincent researchers gave chemotherapy-treated females marrow from transgenic females that express a green fluorescent protein (GFP) marker only on germline cells, which are precurso...Researchers find pathway that controls cell size and division
...ow levels of glucose (nutrient-poor conditions) by becoming unstable and forming what appear to be inactive aggregates. Disrupting this pathway leads to defects in chromosome segregation. A cell that is too small is unable to effectively move its DNA away from the division site and the resultant daughter c...Zebrafish: It's not your parents' lab rat
...sh -- like rats and fruit flies before them -- are becoming regular contributors on research ranging from cancer to cocaine addiction. For example, zebrafish were used a landmark 2005 study that led scientists to the human gene that regulates skin color. Lane's zebrafish studies explore one the major unexpl...Study sheds light on why humans walk on two legs
...king on two legs, they took the first steps toward becoming human," said lead researcher Michael Sockol of UC Davis. "Our findings help answer why." "This is the first time anyone has succeeded in studying energetics and biomechanics in adult chimps," said Sockol, who worked for two years to find an animal ...Alternative farming cleans up water
...te contamination of water can contribute to waters becoming hypoxic and stress aquatic life living downstream. The challenge facing industry, farmers, agricultural advisors, and others concerned about the environment is to develop efficient cropping systems that maintain economical production levels while m...Jefferson scientist's patent dramatically improves
...gaining acceptance and use internationally. Its becoming more widespread, but like anything in science, it will take time to become a fixture, he says. Scientists are like most people: we dont necessarily like to change....Bull's-eye -- Programs targeting math, science teacher shortage may get boost
...er districts have indicated they are interested in becoming partners. Few colleges of education and science and math at other universities collaborate as much as those at UH, said Robert Wimpelberg, dean of the College of Education. The teachHOUSTON program is a natural extension of the things we already...