News tagged with human population density

Why innovation thrives in cities

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 increa ...

Jun 04, 2013
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Law enforcement vital for great ape survival

Recent studies show that the populations of African great apes are rapidly decreasing. Many areas where apes occur are scarcely managed and weakly protected. Researchers from the Max Planck Institute for Evolutionary ...

Dec 08, 2011
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Rodent size linked to human population and climate change

You probably hadn't noticed -- but the head shape and overall size of rodents has been changing over the past century. A University of Illinois at Chicago ecologist has tied these changes to human population density and climate ...

Jul 31, 2009
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