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Tag: "matters" at biology news

Scientists collaborate to assess health of global environment

...as always provided free of charge, he said. Making matters worse, he added, the world's poorest people stand to lose the most from environmental change, because they depend heavily on ecosystem services. In some places, such as sub-Saharan Africa, environmental change is the principal factor causing poverty,...

Leprosy microbes lead scientists to immune discovery

... into the two rapid response cell types. Why this matters became strikingly clear when the scientists studied different forms of leprosy for the presence of the two cell types. (One of the types, the microbe-eating macrophages, is labeled DC-SIGN+, while the other, the antigen-presenting dendritic cells, ar...

Researchers reveal secrets of flying snakes

It seems size does matters after all. But for flying snakes, smaller is better, according to University of Chicago researchers. In the May 15, 2005, issue of the Journal of Experimental Biology, scientists described the effects of size and behavior of flying snakes, and found...

NASA satellite data provides rapid analysis of Amazon deforestation

...ears to get a composite image of the area. To make matters worse, its landscape is constantly evolving. So, scientists have learned to seek answers about this fragile ecosystem with the help of powerful eyes above - satellites. This technology continues to advance and a new study shows that NASA satellite i...

Female butterflies go for sparkle -- not size -- when choosing to mate

...s to show that such a small pattern element really matters in female choice," said Antonia Monteiro, Ph.D. a co-author on the paper and UB assistant professor of biological sciences. "We always think of something huge or ornamental as determining sexual choice," noted Kendra Robertson, co-author, who recent...

Bigger brain size matters for intellectual ability

Brain size matters for intellectual ability and bigger is better, McMaster University researchers have found. The study, led by neuroscientist Sandra Witelson, a professor in the Michael G. DeGroote School of Medicine, and published in the December issue of the journa...

MRSA use amoeba to spread, new research shows

...ant to antibiotics and more virulent. "This makes matters even more worrying," said Professor Brown. "It is almost as though the amoeba act like a gymnasium; helping MRSA get fitter and become more pathogenic". "In many ways this may reflect how this kind of pathogenic behaviour first evolved. A good exa...

Underdogs in the understory: Study suggests nature favors rarer trees

... Science, conclusively demonstrates that diversity matters and has ecological importance to tropical forests. Helene Muller-Landau, an assistant professor of ecology in the University of Minnesota's College of Biological Sciences, is a co-author of the study, which supports previous research by her colleagu...

Groovy protein essential for promoting cancer development

...s from Cech's lab and others had tried to simplify matters by crystallizing a portion of the protein, but the segments that they selected clumped together just as stubbornly as the whole enzyme. Jacobs, a Damon Runyon Cancer Research Foundation fellow in Cech's lab and the first author of the paper, develo...

Report lists top 20 most-vulnerable African carnivores

...s from Cech's lab and others had tried to simplify matters by crystallizing a portion of the protein, but the segments that they selected clumped together just as stubbornly as the whole enzyme. Jacobs, a Damon Runyon Cancer Research Foundation fellow in Cech's lab and the first author of the paper, develo...

Study finds how organs monitor themselves during early development

... of handling allows us to address even complicated matters like the development of an organ in a timely and less costly manner than if we used other model organisms such as the mouse, where similar studies would be quite difficult to carry out," says Dr. Lehmann. Genetics research is revealing commonalit...

Light guides flight of migratory birds

...iments. It turns out that the part of the sky that matters is just above the horizon," said Phillips. "In cue conflict experiments carried out before migration, birds were usually housed in outdoor aviaries in a rotated magnetic field, where they had a view of the whole sky, including the horizon. Once migra...

UGA researchers find that hunting can increase the severity of wildlife disease epidemics

...als to control disease outbreaks can actually make matters worse in some cases. In a study published the August 7 edition of the journal Proceedings of the Royal Society B: Biological Sciences, post-doctoral researcher Marc Choisy and Pejman Rohani, associate professor of ecology and UGA Biomedical and Hea...

Walking not enough for significant exercise benefits

...ram. "Our concern is that people might think what matters most is the total number of daily steps accumulated, and not pay much attention to the pace or effort invested in taking those steps," Dr. Harber said. "The 10,000-step or pedometer-based walking programs are great for people--they are motivating, an...

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

...nt of a nuclear disaster," said Britten. To made matters more complex, one possible trajectory involves flying around Venus and using its gravitational pull to sling the spacecraft toward Mars. That means flying closer to the sun and spending months on the opposite side. "The sun is basically a big nucle...

Professors to develop hand-held pathogen testing device

...e pathogens in a manner and at a price that really matters for human health," Hashsham said. "If we can screen for all pathogens together, we can minimize the threat significantly." Hashsham intends for the portable, hand-held device to be an all-in-one pathogen testing center where DNA amplification and...

Worms produce surprise insight into human fever

...sed to reduce fever in infected patients may make matters worse by preventing activation of the HSF-1 pathway. Aspirin and similar anti-inflammatory drugs, which reduce fever but also activate HSF-1 signaling, could offer the best of both worlds, says Aballay. He also points out that new drugs designed t...

Penn study on lung-infecting bacterial enzyme suggests new approach to cystic fibrosis treatment

...ppresses CFTR’s chloride-passing function. To make matters worse, the products of the lipid breakdown are also known to trigger inflammation and cell death. Together, these facts compellingly suggest that SMase plays a critical role in the heretofore mysterious pathogenesis of lung injury in CF patients....

Cancer tip -- Nanoparticles can damage DNA, increase cancer risk

...re toxicity." According to Pacheco, what makes matters worse is the fact that so far, aside from preventing their release, there are no known ways to prevent the harmful effects of environmental nanoparticles. "It is important to know whether the nanoparticles are entering the cell and causing DNA dam...

Tracking sperm whales and jumbo squid

...rey using electronic tagging techniques." Size matters The jumbo (or Humboldt) squid is a large cephalopod species found only in the Pacific. A mature jumbo squid can weigh more than 100 pounds and grow more than 6 feet long. Sperm whales, the biggest of all toothed whales, inhabit every ocean. An ad...

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