Using commercial solar cells, researchers have converted over 40 percent of the sunlight hitting a solar system into electricity, the highest efficiency ever reported.

A study has found that elite Kenyan athletes have greater brain oxygenation during periods of maximum physical effort, which contributes to their success in long-distance races.

Dr. Jordan Santos-Concejero, of the Department of Physical Education and Sport at the University of the Basque Country carried out the research to analyze the response of cerebral oxygenation at maximum and progressive rhythms amongst elite Kenyan runners from the Kalenjin tribe. 

Researchers from the University of Hawai'i (UH) and NOAA's Office of National Marine Sanctuaries today announced the discovery of an intact "ghost ship" in 2,000 feet of water nearly 20 miles off the coast of Oahu - the former cable ship Dickenson, later the USS Kailua.

Launched in Chester, Pennsylvania in early 1923 for the Commercial Pacific Cable Company, Dickenson was part of a global network of submarine cable that carried telecommunications around the world. Repairing cable and carrying supplies, Dickenson served the remote stations at Midway and Fanning Island from 1923 until 1941. it arrived in Pearl Harbor with evacuees from Fanning Island on December 7th, during the Japanese attack that brought America into World War II.

The chemical messenger dopamine, colloquially called the 'happiness hormone', is important outside social psychology articles on Valentine's Day also; it has been linked to motivation and motor skills and may help neurons with difficult cognitive tasks.  Researchers have found how dopamine influences brain cells while processing rules.

Skin color varies according to latitude and therefore by the intensity of incident ultraviolet light; according to biologists, that is why individuals living at low latitudes developed darker skin, whereas those living at high latitudes ended up with paler pigmentation. 

Yet the mutations that lightened the skin, probably owing to the need to synthesize vitamin D at latitudes with less solar irradiation, also increase the probability of developing melanoma or skin cancer, which is a negative in natural selection. 

A new article  in the Georgia Law Review
details the relationship of two U.S. Supreme Court cases, their impact on freedom of expression, and how they relate to blogging and citizen journalism.