Climate change plus human pressure caused large mammal extinctions in late Pleistocene
...ou look at all the evidence, it's clear that while humans had a major role in these extinctions, in many cas...arge animal populations and surging populations of humans taking over former large-animal habitats. "Human activities today, combined with climate change, pro...Researchers determine genetic cause of Timothy syndrome
...pattern of activity of the gene for the channel in humans and mice revealed that it was expressed not only in heart muscle cells, but also in adult and fetal tissues of the brain, gastrointestinal system, lungs, immune system, smooth muscle and testis. In particular, said Keating, mouse studies showed the g...Cancer vaccine based on pathogenic listeria bacteria shows promise targeting metastases
...ormally induces a strong innate immune response in humans as well as a potent induced immune response. The innate response is a generalized attack on any invader, characterized by secretion of chemicals called cytokines -- including tumor necrosis factor and interferon -- that mobilize generalized killing m...'Most recent common ancestor' of all living humans surprisingly recent
...ost recent person who was a direct ancestor of all humans currently alive may have lived just a few thousand years ago. "While we may not all be 'brothers,' the models suggest we are all hundredth cousins or so," said Joseph T. Chang , professor in the Department of Statistics at Yale University and ...New Arizona State center brings science to policy on issues of water resources and urban growth
... "At the heart of our effort is the study of how humans make decisions in the face of climatic uncertainty in a rapidly growing region," added Gober. "Central Arizona faces an uncertain climate future due to global climate change, annual variability causing droughts and floods, and the urban heat island e...Study: Emission of smog ingredients from trees is increasing rapidly
...ty for air pollution can or should be shifted from humans to trees."...Gene clusters predict atherosclerosis severity, susceptibility
...ch collected more than 60 fresh aorta samples from humans whose hearts had been harvested for organ transplantation. The aorta, the body's largest artery, takes blood ejected from the heart and distributes it throughout the body via smaller arteries. The samples ranged from healthy to severely diseased. ...Punching the timeclock of life
...thway is very similar, then isn't it possible that humans also die earlier than they have to?" Long... theoretical studies and a closer look at aging in humans and mammals. "We're not saying Darwin was wrong. We're just saying that there appear to be...Rice finds 'on-off switch' for buckyball toxicity
... raised concerns about their potential toxicity to humans and animals. CBEN's study is the first cytotoxicity study of human cells exposed to buckyballs. Cytotoxicity refers to toxic effects on individual cells. The study found that even minor alterations to the surface of the buckyballs can dramatically af...New sequence involved in DNA replication timing may aid in cancer detection
... the process of DNA replication is very similar in humans and fission yeast." The scientists found that the DNA surrounding many late-firing origins contains repeats of a 10-basepair sequence that is rich in the nucleic acid component, guanine. Yompakdee and Huberman named these repeats "Late Consensus Sequ...Bronfenbrenner book sums up human development
...the ecology of human development acknowledges that humans don't develop in isolation, but in relation to their family and home, school, community and society. Each of these ever-changing and multilevel environments, as well as interactions among these environments, are key to development, he says. Before B...No role for simian virus 40 in human pleural mesotheliomas
...s and early 60's, its potential to cause cancer in humans has been a source of intense debate since the apparent detection of SV40 DNA in some human tumors was first reported," explained Fernando Lopez-Rios, M.D., of the Department of Pathology and the study's lead author. "An important aspect of our study ...$2.7 million grant to support creation of virtual zebrafish atlas
... vertebrates, zebrafish provide a closer model for humans than yeast or fruit flies, which are also commonly used for medical research. In the early 1990s, Cheng and his team became the first to develop the zebrafish as a medical research model to study the relationship between high rates of mutation and th...'Fossil genes' reveal how life sheds form and function
...mans. Fossil olfactory genes tell the story of how humans came to depend more on sight as color vision displ...hat, in the distant past, was far superior to what humans enjoy today. In the Japanese yeast, the seven fossil genes that make up the eroding pathway are "sti...Key stimulator of colorectal cancer identified
...le that promotes one of the most deadly cancers in humans and reveals the molecular mechanisms underlying the protective effects of nonsteroidal anti-inflammatory drugs (NSAIDS) against the disease. The research, published in the September issue of Cancer Cell, identifies potential targets for future therap...Scientists decipher genetic code of biothreat pathogen
...gainst this highly infectious equine disease. When humans are infected, treatment requires a long-term regimen of multiple antibiotics. A test developed by German scientists after B. mallei was isolated in 1882 greatly improved the early detection of the disease in horses. Glanders was eradicated in the Uni...Resveratrol synthase uncovered: Cyclization specificity of type III polyketide synthases
...and have been shown to possess health benefits for humans and other animals when present in their diet. The best known stilbene is resveratrol, which is found in grapes and is believed to be a major contributor to the "French Paradox," which refers to the health benefits associated with the moderate consump...US investment firm gives away Rhode Island-sized lands in Chile
...toward nature and help people imagine wildlife and humans living together in harmony. WCS is committed to this work because it believes it is essential to the integrity of life on Earth....USC study links historical increases in life span to lower childhood exposure to infection
Starting in the mid-1850s, humans began living longer due, researchers believe, to improvements in living conditions, nutrition, income levels and medicine. But two USC gerontologists have found an invisible cause that could have important implications for modern-day health care. ...9/11 search-and-rescue dogs exhibit few effects from exposure to disaster sites
...parent lung abnormalities. While it usually takes humans at least 20 years to develop mesothelioma after asbestos exposure a major fear at all three sites the shorter life span of dogs often means a relatively shorter latency period for developing cancer. To assess the psychological wellbeing of th...