In 2010, in the journal Nature, a pair of physicists at the Santa Fe Institute showed that when the population of a city doubles, economic productivity goes up by an average of 130 percent. Not only does total productivity ...
Social Sciences
Jun 4, 2013
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When infections occur in the body, stem cells in the blood often jump into action by multiplying and differentiating into mature immune cells that can fight off illness. But repeated infections and inflammation can deplete ...
Cell & Microbiology
May 21, 2013
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(Phys.org) —Northwestern University researchers have developed a new method for delivering molecules into single, targeted cells through temporary holes in the cell surface. The technique could find applications in drug ...
Bio & Medicine
May 21, 2013
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(Phys.org) —A class of water-loving, jelly-like materials with uses ranges ranging from the mundane, such as superabsorbent diaper liners, to the sophisticated, such as soft contact lenses, could be tapped for a new line ...
Bio & Medicine
May 15, 2013
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Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit as a whole. A ...
Evolution
Apr 30, 2013
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A team of Virginia Tech researchers has succeeded in transforming cellulose into starch, a process that has the potential to provide a previously untapped nutrient source from plants not traditionally thought of as food crops.
Biotechnology
Apr 16, 2013
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Many factors—including climate change, overfishing or loss of food supply—can push a wild animal population to the brink of collapse. Ecologists have long sought ways to measure the risk of such a collapse, which could ...
Ecology
Apr 10, 2013
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Scientists have used genetic testing on animals that died of natural causes for the first time, potentially boosting efforts to save endangered species.
Plants & Animals
Mar 5, 2013
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(Phys.org)—Scientists have used sugar-coated scaffolding to move a step closer to the routine use of stem cells in the clinic and unlock their huge potential to cure diseases from Alzheimer's to diabetes.
Biochemistry
Feb 26, 2013
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Red coloration—historically seen as costly in vertebrates—historically seen as costly in vertebrates—might represent some physiological benefit after all, according to research published in the journal Physiological ...
Plants & Animals
Jan 28, 2013
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