Hugh Pickens DOT Com writes "Chris Mooney reports at Slate that research conducted by Erin Buckels of the University of Manitoba confirmed that people who engage in internet trolling are characterized by personality traits that fall in the so-called Dark Tetrad: Machiavellianism (willingness to manipulate and deceive others), narcissism (egotism and self-obsession), psychopathy (the lack of remorse and empathy), and sadism (pleasure in the suffering of others). In the study, trolls were identified in a variety of ways. One was by simply asking survey participants what they 'enjoyed doing most' when on online comment sites, offering five options: 'debating issues that are important to you,' 'chatting with others,' 'making new friends,' 'trolling others,' and 'other.' The study recruited participants from Amazon's Mechanical Turk website and two measures of sadistic personality were administered (PDF): the Short Sadistic Impulse Scale and the Varieties of Sadistic Tendencies Scale. Only 5.6 percent of survey respondents actually specified that they enjoyed 'trolling.' By contrast, 41.3 percent of Internet users were 'non-commenters,' meaning they didn't like engaging online at all. So trolls are, as has often been suspected, a minority of online commenters, and an even smaller minority of overall Internet users. Overall, the authors found that the relationship between sadism and trolling was the strongest, and that indeed, sadists appear to troll because they find it pleasurable. 'Both trolls and sadists feel sadistic glee at the distress of others. Sadists just want to have fun ... and the Internet is their playground!' The study comes as websites are increasingly weighing steps to rein in trollish behavior but the study authors aren't sure that fix is a realistic one. 'Because the behaviors are intrinsically motivating for sadists, comment moderators will likely have a difficult time curbing trolling with punishments (e.g., banning users),' says Buckels. 'Ultimately, the allure of trolling may be too strong for sadists, who presumably have limited opportunities to express their sadistic interests in a socially-desirable manner.' Perhaps posting rights should only be unlocked if you pass a test."

An anonymous reader sends this NASA report: "One year ago, on Feb. 15, 2013, the world was witness to the dangers presented by near-Earth Objects (NEOs) when a relatively small asteroid entered Earth's atmosphere, exploding over Chelyabinsk, Russia, and releasing more energy than a large atomic bomb. ... NASA is now pursuing new partnerships and collaborations in an Asteroid Grand Challenge to accelerate NASA's existing planetary defense work, which will help find all asteroid threats to human population and know what to do about them. In parallel, NASA is developing an Asteroid Redirect Mission (ARM) — a first-ever mission to identify, capture and redirect an asteroid to a safe orbit of Earth's moon for future exploration by astronauts in the 2020s. ... NASA is assessing two concepts to robotically capture and redirect an asteroid mass into a stable orbit around the moon. In the first proposed concept, NASA would capture and redirect an entire very small asteroid. In the alternative concept, NASA would retrieve a large, boulder-like mass from a larger asteroid and return it to this same lunar orbit. In both cases, astronauts aboard an Orion spacecraft would then study the redirected asteroid mass in the vicinity of the moon and bring back samples."

An anonymous reader sends this news from CNN: "The number of chemicals known to be toxic to children's developing brains has doubled over the last seven years, researchers said. Dr. Philip Landrigan at Mount Sinai School of Medicine in New York and Dr. Philippe Grandjean from Harvard School of Public Health in Boston, authors of the review published Friday in The Lancet Neurology journal say the news is so troubling they are calling for a worldwide overhaul of the regulatory process in order to protect children's brains. 'We know from clinical information on poisoned adult patients that these chemicals can enter the brain through the blood brain barrier and cause neurological symptoms,' said Grandjean. 'When this happens in children or during pregnancy, those chemicals are extremely toxic, because we now know that the developing brain is a uniquely vulnerable organ. Also, the effects are permanent.'"

The Associated Press reports that the mysterious "jelly doughnut" shaped rock spotted by the Opportunity rover on Mars wasn't put there by aliens or by mysterious forces of Mars weather. Instead, the NASA has a simple explanation: one of the rover's larger wheels "broke it off a larger rock and then kicked it into the field of view." Of course, they would say that just to head off a lawsuit demanding an investigation into the real reasons.