A review of retractions in medical and biological peer-reviewed journals finds the percentage of studies that had to be withdrawn because of scientific misconduct has jumped several-fold since the mid-1970s.
Titan, the largest of the more than 60 natural satellites of Saturn, is covered in seas, lakes and rivers of methane, and hosts a thick atmosphere, making it one of the most Earth-like bodies in the solar system.
An Interior Department official said emails released by Charles Monnett were cited by a federal appeals court in decisions to vacate approval by the Bureau of Ocean Energy Management of an oil and gas company's Arctic exploration plan.
Experts stressed that the ancient Mayas, whose 'classic' culture of writing, astronomy and temple complexes flourished from A.D. 300 to 900, were extremely interested in future events, far beyond Dec. 21.
Mars rover Curiosity found rocks on the Martian surface that are too big to be carried by wind, so researchers suppose water must have existed on Mars at one time. Over the next two years, Curiosity will continue its search for signs of ancient microbial life on Mars.
Using imaging of the galaxy M87, astronomers have for the first time measured the closest stable orbit within which matter can circle a black hole. They found that this innermost orbit measures 750 times the distance from the Earth to the sun.
On Thursday, NASA's Mars Curiosity rover identified what are believed to be rocks moved by water that once flowed on the Red Planet. Curiosity's further exploration is hoped to determine whether Mars was once inhabited by microorganisms.
According to prosecutors, the six researchers and the Department of Civil Protection downplayed the likelihood that a series of tremors that hit the city in early 2009 were foreshadowing a larger quake.
A new report from NASA suggests that the agency prioritize bringing samples back from Mars to Earth for study. NASA will not make a specific plan for how they'll achieve this goal until after the president releases his 2014 budget in February.