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Biosciences
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Today's news headlines from the sources selected by our team:
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Deep Sea Methane Scavengers Captured
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Scientists succeeded in capturing syntrophic (means "feeding together") microorganisms that are known to dramatically reduce the oceanic emission of methane into the atmosphere. These microorganisms that oxidize methane anaerobically are an important component of the global carbon cycle and a major sink for methane on Earth. Methane - a more than 20 times stronger greenhouse gas than carbon dioxide - constantly seeps out large methane hydrate reservoirs in the ocean floors, but 80 percent of it are immediately consumed by these microorganisms.
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Rapid, Dramatic 'Reverse Evolution' Documented In Tiny Fish Species
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Evolution is supposed to inch forward over eons, but sometimes, at least in the case of a little fish called the threespine stickleback, the process can go in relative warp-speed reverse, according to a new study. The adaptation coincides with the '60s cleanup of toxic pollution in Seattle's Lake Washington.
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Bears And Hibernation: New Insights Into Metabolism In Extreme Conditions
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Due to their ability to produce a potent inhibitor of protein degradation, hibernating bears do not lose muscle mass after long periods of hibernation. The team researched for the first time the physiological reasons for an effect that is well known to the scientific community -- the fact that hibernating bears do not lose muscle tissue, only fat. The team studied the physiological response of muscle cells of laboratory rats grown with hibernating bear plasma outside the period of hibernation.
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MIT crafts bacteria-resistant films
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(Massachusetts Institute of Technology) Having found that whether bacteria stick to surfaces depends partly on how stiff those surfaces are, MIT engineers have created ultrathin films made of polymers that could be applied to medical devices and other surfaces to control microbe accumulation.
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New study casts further doubt on risk of death from higher salt intake
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(Albert Einstein College of Medicine) Contrary to long-held assumptions, high-salt diets may not increase the risk of death, according to investigators from the Albert Einstein College of Medicine of Yeshiva University. They reached their conclusion after examining dietary intake among a nationally representative sample of adults in the U.S. The Einstein researchers actually observed a significantly increased risk of death from cardiovascular disease associated with lower sodium diets. They report their findings in the advance online edition of the Journal of General Internal Medicine.
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Simple model cell is key to understanding cell complexity
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(Penn State) A team of Penn State University researchers has developed a simple artificial cell with which to investigate the organization and function of two of the most basic cell components: the cell membrane and the cytoplasm -- the gelatinous fluid that surrounds the structures in living cells. The work could lead to the creation of new drugs that take advantage of properties of cell organization to prevent the development of diseases.
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An ancient protein balances gene activity and silences foreign DNA in bacteria
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Compared to humans, bacteria have a much tidier genome. The tiny microorganisms pack their genes closely together, and don’t carry around a lot of extraneous DNA, so-called junk DNA that fills in the gaps between genes. Some 90 percent of the complete genome sequence of the bacteria E. coli contains sequences of DNA that code for protein, while 90 percent of the human genome is non–coding junk DNA. 
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Dr. Anthony Fauci reflects on 25 years of HIV
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On the 25th anniversary of the first scientific article linking a retrovirus to AIDS, Anthony S. Fauci, M.D., director of the National Institute of Allergy and Infectious Diseases, part of the National Institutes of Health, reflects in an essay in Nature on his experience treating and studying HIV/AIDS for the past quarter century. Outlining the peaks and valleys of the scientific community’s journey so far, Dr. Fauci writes, “…we must learn from our mis-steps, build on our successes in treatment and prevention, and renew our commitment to developing the truly transforming tools that will one day put this scourge behind us.” 
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