Global climate change threatens reindeer, caribou
... can collectively monitor the relationship between humans and Rangifer" said Gary Kofinas, CARMA organizer and professor of policy and management at IAB. "Everyone is observing unprecedented changes in the Arctic such as an overall increase in temperature, changes in the variability of weather, changes e...ASU gets grant to develop high speed DNA sequence reader
...able researchers to compare different species with humans and sequence the complete genomes of hundreds or thousands of people as part of studies to identify genes that contribute to cancer, diabetes and other common diseases. The ASU team is utilizing part of the machinery of a human cell, which can read ...'Broken' gene reveals evolution of salt retention and possible ties to hypertension
...history." In the sub-Saharan African regions where humans first appeared, available salt must have been limi... survival advantage. This advantage decreased as humans spread to cooler climates. The first suggestion that too much salt, rather than too little, may be ...Ethical paradigm: Relating embryonic stem cell use to organ donation
...lost, even if other cells and organs remain alive, humans are considered organismically dead. At this time organs and tissues may be harvested as needed and allowed by . The authors propose a similar mechanism might be used for embryonic cells. At this stage, however, no definition for death has been defi...JCI table of contents November 1, 2004
...lost, even if other cells and organs remain alive, humans are considered organismically dead. At this time organs and tissues may be harvested as needed and allowed by . The authors propose a similar mechanism might be used for embryonic cells. At this stage, however, no definition for death has been defi...First human trial of bioartificial kidney shows promise for acute renal failure
ANN ARBOR, Mich. -- The first test in humans of a bioartificial kidney offers hope of the device's potential to save the lives of people with acute renal failure, researchers at the University of Michigan Health System report. While the phase I/II study was designed primarily to look at the saf...Economics and ecology combine at UGA in NSF-funded study of evolutionary game theory
... conflict between that most rational of creatures humans and the viruses causing human disease, such as AI...retic framework, we can simultaneously capture how humans respond to the virility of a disease, and how viruses respond to treating a disease." "We are then i...Research confirms that vCJD prions can be removed from blood
...cause fatal, neurorodegenerative prion diseases in humans and animals. "The outcomes of these new studies are fortuitous in respect to the recent cases of transfusion-transmitted vCJD. The possibility of further increases in the number of human cases is of an uncertain magnitude, and the adverse impact th...People cause more soil erosion than all natural processes
... as natural erosion, Wilkinson's results mean that humans are stripping soil from the surface of the Earth far faster than nature can replace it. "This situation is particularly critical," Wilkinson said, "because the Earth's human population is growing rapidly and because almost all potentially arable lan...U-M researcher examines the cell's housekeeping habits
...esearchers are able to identify autophagy genes in humans and other organisms, including mice, and can tinker with the regulation of the process to see how it works. Cancer researchers have been trying to figure out how to turn apoptosis on as a way to have cancer cells kill themselves. Being able to cont...Crucial evolutionary link points to origins of modern cells
...aryotic cells -- which make up plants, animals and humans -- from the prokaryotic cells that make up bacteria. Reporting in PLoS Biology, Rout, together with Rockefeller colleague Brian T. Chait, D.Phil., and Andrej Sali, Ph.D., a former Rockefeller scientist now at University of California, San Francisc...Molecular switch provides clues to remarkable adaptability of human pathogen
...auses a variety of potentially fatal infections in humans with a disease- or injury-weakened immune system. In addition, infection with P. aeruginosa is the primary cause of death for patients with cystic fibrosis (CF), who often become infected shortly after birth and are afflicted with chronic persistent......he locomotion of a wide range of animals including humans and may help to design more stable robots and help us to understand how dinosaurs walked....New Royal Society journal studies
... as the moa. Their demise following the arrival of humans to New Zealand has been widely documented, but a l...on estimate (c. 159,000) for moa at the arrival of humans and suggests that moa numbers had already declined prior to human settlement, perhaps as a result of...Award will help unlock mysteries of one of Earth's most important organisms
... in the ocean. They generate about half the oxygen humans breathe, form the base of the food web in the seas and remove the greenhouse gas carbon dioxide from the atmosphere. With the development of new molecular tools that allow scientists to study species at the DNA level, Armbrust and her colleagues not...New program examines stem cells' potential to repair, replace damaged tissue
...we?" says Dr. Isales. The idea of regeneration in humans has always existed to some extent, he says, but now scientists have the tools to start making it happen. "So there is potential here - when a patient needs a kidney transplant or when you have a patient with burns who needs skin grafts - the possibi...Sex-determining genes of infectious fungus resemble human Y chromosome
...erned by sex chromosomes in plants and animals. In humans and other mammals, males have one X and one Y chromosome, while females have a pair of X's. In fungi, sexual identity is determined by so-called "mating type loci," genes located in a contiguous region of the genome, but which typically do not ...Declining fish supply linked to wildlife consumption in West Africa, Science study reports
... for example, an appreciation of the ways in which humans and their resources interact across ecosystems. Wild animals from the tropics that are hunted for eventual human consumption are often grouped together under the label "bushmeat." Primates, big cats, elephants, antelope, porcupines, giant snails, tin...In a tiny squid, bacterial toxin governs organ development
...lecule that causes whooping cough and gonorrhea in humans has been found to be a critical catalyst for organ...s in humans. The implications that humans are awash in benign and beneficial microbes raises new concerns about the overuse of antibiotics, an...By impounding iron, FHC foils cell suicide, fuels inflammation
...through a balance of cell death and cell division, humans lose and regain a mass of cells roughly equal to their weight. When a virus attacks an organism, for example, infected cells commit suicide to protect their healthy neighbors. At the same time, white blood cells multiply rapidly to battle the inva...