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Jefferson scientists find rabies-based vaccine could be effective against HIV
Rabies, a relentless, ancient scourge, may hold a key to defeating another implacable foe: HIV. Scientists at Jefferson Medical College in Philadelphia have used a drastically weakened rabies virus to ferry HIV-related proteins into animals, in essence, vaccinating them against an AIDS-like disease. view more (2007-04-04)
Why are there so many more species of insects? Because insects have been here longer
J. B. S. Haldane once famously quipped that "God is inordinately fond of beetles." Results of a study by Mark A. McPeek of Dartmouth College and Jonathan M. Brown of Grinnell College suggest that this fondness was expressed not by making so many, but rather by allowing them to persist for so long. view more (2007-04-04)
Study: Long legs are more efficient
Scientists have known for years that the energy cost of walking and running is related primarily to the work done by muscles to lift and move the limbs. view more (2007-03-13)
UGA research shows rats are capable of reflecting on mental processes
Let's say a college student enters a classroom to take a test. She probably already has an idea how she will do—knowledge available before she actually takes out a pencil. But do animals possess the same ability to think about what they know or don't know? view more (2007-03-09)
Metacognition: Faced with a test, rats can check their knowledge first
Researchers have found evidence that rats are capable of metacognition—that is, they can possess knowledge of their own cognitive states. view more (2007-03-09)
New compound prevents alcoholic behavior, relapse in animals by blocking stress response
A study of alcohol-dependent animals shows that a newly discovered compound that blocks chemical signals active during the brain's response to stress effectively stops excessive drinking and prevents relapse. view more (2007-03-07)
Cold climate produced by algae contributed to onset of multicellular life
The rise of multicellular animals about 540 million years ago was a turning point in the history of life. A group of Finnish scientists suggests a new climate-biosphere interaction mechanism for the underlying processes in a new study. view more (2007-02-14)
Big-brained birds survive better in nature
Birds with brains that are large in relation to their body size have a lower mortality rate than those with smaller brains, according to new research published in the journal Proceedings of the Royal Society B: Biological Sciences today. view more (2007-01-10)
Natural, soy-based substance might help fight MS, Jefferson neuroscientists find
A natural substance made from soy appears to have amazing restorative powers when given to animals with a multiple sclerosis (MS)-like disease. view more (2006-12-13)
Finding an answer to Darwin's Dilemma
The sudden appearance of large animal fossils more than 500 million years ago - a problem that perplexed even Charles Darwin and is commonly known as "Darwin's Dilemma" - may be due to a huge increase of oxygen in the world's oceans, says Queen's paleontologist Guy Narbonne, an expert in the early evolution of animals and their... view more... (2006-12-11)
Don't move a muscle: Evolutionary insight into myogenesis
In a paper released online ahead of its scheduled December 15th publication date, Dr. Michael Krause (NIH) and colleagues detail the transcription network that drives muscle development in the roundworm C. elegans, and make a strong argument for an evolutionarily conserved program of myogenesis in all animals. view more (2006-12-07)
Pure carbon nanotubes pass first in vivo test
In the first experiments of their kind, researchers at Rice University and The University of Texas M. D. Anderson Cancer Center have determined that carbon nanotubes injected directly into the bloodstream of research lab animals cause no immediate adverse health effects and circulate for more than one hour before they are removed by the liver. view more (2006-11-29)
Some animals won't adapt to climate change
In a fascinating study appearing in the November issue of The American Naturalist, biologists investigated the response of small animals to climate change on a remote sub-Antarctic Island. view more (2006-11-14)
Animal testing alternative has ticks trembling at the knees
The thousands of test animals currently required to evaluate new pesticides could be replaced by tricking ticks into setting up home on a faux cow hide. view more (2006-11-06)
The CReSA is working on a new strategy to combat spongiforms
Researchers at the Animal Health Research Centre (CReSA) are developing immunotherapeutical strategies against diseases produced by prion, such as Bovine Spongiform Encephalitis. view more (2006-11-01)
Discovery about evolution of fungi has implications for humans, says U of M researcher
As early fungi made the evolutionary journey from water to land and branched off from animals, they shed tail-like flagella that propelled them through their aquatic environment and evolved a variety of new mechanisms (including explosive volleys and fragrances) to disperse their spores and reproduce in a terrestrial setting. view more (2006-10-23)
Insight into dopamine role suggests new treatment pathway for Parkinson's
Dopamine (DA) not only functions as a neurotransmitter, a chemical messenger between neurons by which one neuron triggers another, researchers have found. view more (2006-10-19)
Archerfish tune their shots to universal properties of prey adhesion
Archerfish exhibit the remarkable ability to hunt for insects and other small terrestrial animals by firing precisely aimed streams of water that knock prey onto the water's surface. view more (2006-10-10)
A plan for reintroducing megafauna to North America
Dozens of megafauna (large animals over 100 pounds) - such as giant tortoises, horses, elephants, and cheetah - went extinct in North America13,000 years ago during the end of the Pleistocene. view more (2006-10-03)
Leptin has powerful effect on reward center in the brain
Leptin, a hormone critical for normal food intake and metabolism, exerts a strong effect on appetite by acting in the mid-brain region as well as in the hypothalamus. view more (2006-09-29)
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