Diatom genome reveals key role in biosphere's carbon cycle
...h, a single-cell microbe, engulfed what scientists say was likely a kind of red alga. The two became one organism, an arrangement called endosymbiosis, and swapped some genetic material to create a new hybrid genome. "This project helps illustrate the amazing diversity of life on our planet," Armbrust ...Don't stand so close to me: A new view on how species coexist
...as caused them to compromise on key life measures, say ecologists at Imperial College London and Royal Holloway, University of London, writing in the journal Science today (1 October). The researchers suggest a new basis for explaining how communities of species assemble: they have to give up being good ......m or disprove that possibility. Clayton and Rogers say it's also possible our ancestors got the second kind of head lice by fighting with or cannibalizing another human species or by sharing or stealing their clothing. Clayton says evidence of contact between two species of humans is surprising b...Bugs in the gut could play key role in understanding human disease and drug toxicity
... a understanding and novel treatments for diseases say scientists from Imperial College London and Astra ...nating many physiological and metabolic responses, say the researchers. Professor Jeremy Nicholson, from Imperial College London, and lead researcher comme...Is more better: Counting birds may only tell part of the story
...s at least in terms of breeding habitat quality," say the researchers in their report. Variation of hab...tions, regardless of the type of bird or habitat," say the authors. "Avian habitat evaluations: should counting birds count?" appears in the Octobe...Society for Psychophysiology Research
...television programs, whereas low sensation seekers say they prefer news and magazine programs. In this study, researchers compared the physiological responses of high and low sensation seekers during viewing of action news television segments and found that high sensation seekers were more physiologicall...New risks for bladder cancer identified by MIT team
...ource of exposure for non-smokers, the researchers say that it is very important to identify the other sources of exposure for nonsmokers. "Identifying the non-smoking related sources of these [carcinogens] should become a high scientific priority," write the authors, who are led by Professor Steven...UF scientists have bionanotechnology recipe to find elusive bacteria
...said. "Instead, we can come back in 20 minutes and say either this is safe or there is a problem." Chad Mirkin, professor of chemistry at Northwestern University and director of Northwestern's Institute for Nanotechnology, said the new technique looks promising. "This looks to be a pretty impressive way...Support groups aid women with 'breast cancer gene mutations'
...portive-expressive group therapy." The researchers say 67 women completed all 12 sessions. Those who participated in psychosocial-focused group therapy showed improvements in several psychosocial factors, including general anxiety, cancer anxiety, and depression. They add the group therapy appears to hav...Health, food, new technologies featured during ACS meeting Oct. 17-20 in Peoria, Ill.
...Scientists at the University of Illinois in Urbana say the ancient sweetener may be a healthier alternative than corn syrup due to its higher level of antioxidants, compounds which are believed to fight cancer, heart disease, stroke and other diseases. Honey, which contains a number of antioxidant compon...Tips from the Journals of the American Society for Microbiology
...uce long-lived responses and be highly efficient," say the researchers. In the ...ne gun-based pDNA immunization against influenza," say the researchers. "Such a vaccination strategy is predicted to be safe and efficient and would resul...Coke versus Pepsi: It's all in the head
...ain regions that recall cultural influences. Thus, say the researchers, they have shown neurologically how a culturally based brand image influences a behavioral choice. These choices are affected by perception, wrote the researchers, because "there are visual images and marketing messages that have insi...Experimental drug prevents vaginal simian HIV transmission in monkeys Science study says
...isition. Despite the challenges ahead, the authors say their findings represent an important proof-of-concept: topical application of a substance that blocks CCR5 can protect against vaginal transmission of SHIV in monkeys. Science coauthor Ronald Veazey and colleagues from Tulane National Primate Resea......essed people and non-depressed people. "We can't say whether these FGF gene expression changes are a predisposing factor for depression, or a consequence of the disease process itself," says lead author and U-M research investigator Simon Evans, Ph.D. "There may be totally normal people out there with ...Identifying genes that contribute to a low level of response to alcohol
...e interested in the genetics of alcoholism, we can say that the low response to alcohol is a major risk... For researchers who are looking for genes, I can say 'let me save you some time,' because we have spent hundreds of hours reviewing the literature to try...Normal cells in tumors may aid cancer growth
...re to carcinogens, Eng says. It's also too soon to say how genetic damage to stromal cells might influence tumor growth. However, stromal cells can produce growth factors and other substances that can influence the behavior of cancer cells. The loss of chromosome regions may result in the loss of ...Neurosurgeons identify growth of new adult brain cells, possible treatment for epilepsy
...neration in the brains of adults with epilepsy and say it could lead to ground-breaking treatment for the disease. William Bingaman, M.D., a neurosurgeon from the Cleveland Clinic, presented his findings at the 54th annual meeting of the Congress of Neurological Surgeons. Researchers studied patients wi...Clues to improving TB treatment
...tuberculosis drugs like isoniazide and rifampicin, say study authors Alain Baulard of the Institut Pasteur de Lille and colleagues. Drugs like ETH are successful against the disease, but only in large doses that produce high rates of side effects. The combination of ETH and the disabled protein "may ...Psychologist finds instance where 'two wrongs do make a right'
...ed by a large rectangular frame, and were asked to say where they thought the spot appeared. If the frame was shifted to the observer's right or left, the perceived location of the spot was shifted in the opposite direction. However, when observers were asked to physically point toward the spot, they did...Emory study details dolphin brain evolution for the first time
...quite different paths" Marino says. "What the data say to me is that we, as humans, are not that special. Although we are highly encephalized, it's not by much or for that long compared with odontocetes." Marino and her colleagues add that the observation that there is a single remaining human lineage "p...