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Living African group discovered to be the most populous humans over the last 150,000 years
Living African group discovered to be the most populous humans over the last 150,000 years 04 December 2014New genetic research reveals that a small group of hunter-gatherers now living in Southern Africa once was so large that it comprised the majority of living humans during most of the past 150,000 years. Only during the last 22,000 years have the other African ethnicities, including the ones giving rise to Europeans and Asians, become vastly most numerous. Now the Khoisan (who sometimes call themselves Bushmen) number about 100,000 individuals, while the rest of humanity numbers 7 billion. Their lives and ways have remained unaltered for hundreds of generations, with only recent events endangering their hunter-gatherer lifestyles. The study's findings will be published in the journal Nature Communications on 4 December 2014.
NASA's Swift Satellite Marks 10 Years of Game-changing Astrophysics: Mission Control Is at Penn State
NASA's Swift Satellite Marks 10 Years of Game-changing Astrophysics:  Mission Control Is at Penn State 20 November 2014On the tenth anniversary of its launch, NASA’s Swift Gamma-ray Burst Explorer -- an orbiting space observatory with major and continuing contributions from Penn State scientists -- is recognized as one of the most versatile astrophysics missions ever flown. It remains the only satellite that can precisely locate gamma-ray bursts -- the universe’s most powerful explosions. It also is the only satellite that can monitor the explosions in space across a broad range of wavelengths using multiple instruments before these powerful bursts fade from view.
Major New Study Reveals New Similarities and Differences Between Mice and Humans
Major New Study Reveals New Similarities and Differences Between Mice and Humans 19 November 2014Powerful clues have been discovered about why the human immune system, metabolism, stress response, and other life functions are so different from those of the mouse. A new, comprehensive study of the mouse genome by an international group of researchers including Penn State University scientists reveals striking similarities and differences with the human genome. The study may lead to better use of mouse models in medical research.

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