astroengine writes "Sure, we're looking 172 years into the future, but an international collaboration of scientists have developed two mathematical models to help predict when a potentially hazardous asteroid (or PHA) may hit us, not in this century, but the next. The rationale is that to stand any hope in deflecting a civilization-ending or extinction-level impact, we need as much time as possible to deal with the threatening space rock. (Asteroid deflection can be a time-consuming venture, after all.) Enter '(101955) 1999 RQ36' — an Apollo class, Earth-crossing, 500 meter-wide space rock. The prediction is that 1999 RQ36 has a 1-in-1,000 chance of hitting us in the future, and according to one of the study's scientists, María Eugenia Sansaturio, half of those odds fall squarely on the year 2182."

thecarchik writes "The first two plug-in cars from major manufacturers will go head-to-head on warranties and lease prices: $350 a month for the 2011 Chevrolet Volt, $349 for the 2011 Nissan Leaf. Now the choice shifts to other measures, including electric and overall range, as well as the plug-in perks that states like California offer to early adopters to encourage them to opt for electric cars. This is where it gets interesting. While California loves the Nissan Leaf, current regulations deny Chevy Volt buyers two significant perks: a $5,000 rebate, and permission to drive solo in HOV Lanes."

pickens writes "A study in the Netherlands illustrates car thieves' preferences. From 2004-2008, the most commonly colored vehicle stolen was black. This may be because black vehicles look more luxurious. Following close behind black were gray/silver automobiles. Of the 109 pink cars in the study, not one was stolen. A bright and uncommon color, like pink, may be as effective deterrent as an expensive security system. Ben Vollaard, who conducted the research, wrote, 'If the aversion to driving a car in an offbeat color is not too high – or if someone actually enjoys it – then buying deterrence through an uncommon car color may be at least as good a deal as buying deterrence through an expensive car security device.'"

cremeglace writes "Scientists say they may have discovered a way to develop cool new vaccines — and they mean that literally. By replacing essential genes in a mammalian pathogen with their counterparts from Arctic bacteria, they have created strains that provoke a protective immune response in mice, but that don't spread to the warm parts of the body where they could do serious harm. The team hopes that the method will lead to a new generation of vaccines for major bacterial diseases such as tuberculosis."

Antidepressants may help a lot of people get up in the morning but new research shows they are making shrimp swim into that big bowl of cocktail sauce in the sky. Alex Ford, a marine biologist at the University of Portsmouth, found that shrimp exposed to the antidepressant fluoxetine are 5 times more likely to swim towards light instead of away from it. Shrimp usually swim away from light as it is associated with birds or fishermen.

TravisTR passes along a story about the death of Nemesis. "The data that once suggested the Sun is orbited by a distant dark companion now raises even more questions... The periodicity [of mass extinctions] is a matter of some controversy among paleobiologists but there is a growing consensus that something of enormous destructive power happens every 26 or 27 million years. The question is what? ... another idea first put forward in the 1980s is that the Sun has a distant dark companion called Nemesis that sweeps through the Oort cloud every 27 million years or so, sending a deadly shower of comets our way. ... [Researchers] have brought together a massive set of extinction data from the last 500 million years, a period that is twice as long as anybody else has studied. And their analysis shows an excess of extinctions every 27 million years, with a confidence level of 99%. That's a clear, sharp signal over a huge length of time. At first glance, you'd think it clearly backs the idea that a distant dark object orbits the Sun every 27 million years. But ironically, the accuracy and regularity of these events is actually evidence against Nemesis' existence."

eldavojohn writes "Amnesty International is reporting an unusual case of censorship in which Chinese police questioned HIV/AIDS workers in China and instructed them to cancel an airing of a documentary made by Aizhixing Institute of Health Education on the disease. The director of that NGO recently left China after constant police harassment. The canceled documentary was about Tian Xi, a patient who contracted HIV by blood transfusion at age 9."

History's Coming To writes "Several writers for the ScienceBlogs.com collective have publicly resigned from the site, and many more have voiced concerns over parent company Seed's decision to include a paid blog under the nutrition category from PepsiCo. The blog was to be written by PepsiCo food scientists, detailing their work. The UK's Guardian newspaper has picked up on the story, and includes a letter from Seed editor Adam Bly which covers the company's rationale." The ScienceBlogs Team later canceled the PepsiCo blog and apologized, instead leaving their users with a few tough questions: "How do we empower top scientists working in industry to lead science-minded positive change within their organizations? ... How do companies who seek genuine dialogue with this community engage?"

astroengine writes "NASA's stockpile of the plutonium isotope Pu-238 is at a critical level, causing concern that there won't be enough fuel for future deep space missions. Pellets of Pu-238 are used inside radioisotope thermoelectric generators (or RTGs) to generate electricity for space probes traveling beyond the orbit of Mars — solar energy is too weak for solar arrays at these distances. Blocked by a contract dispute with Russia to supply Pu-238 and the US Department of Energy that has not been granted funds to produce more of the isotope, NASA lacks enough of the radioisotope to fuel the future joint NASA-ESA mission to Europa. However, the head of the European Space Agency has announced that they have plans to commence a new nuclear energy program to alleviate the situation."

reillymj writes "Every so often, a 300-pound manhole cover blows sky high in Gotham, followed sometimes by a column of flame and smoke. (There are a few hundred 'manhole incidents' per year in the city, not all of them this dramatic.) Researchers from Columbia University applied machine learning algorithms to Con Edison's warren of aging electrical wires and sewage access points around Manhattan. As the system learns where dangerous mixtures of sewer gas and decrepit wiring are likely to come in contact, it makes forecasts about trouble spots, including where the next explosion may occur. The team has just completed rankings for manholes in Brooklyn and the Bronx, and plans to return to Manhattan's grid, armed with the most recent inspection and repair data." The research was published in the July issue of Machine Learning.

An anonymous reader writes "Looks like Australia's government is running a bit scared of a population enraged by its controversial mandatory filtering project. The Government today announced a suite of measures designed to provide controls around the filter project, including independent oversight and a review of content which would be included. In addition, some Australian ISPs will voluntarily censor any child pornography URLs. But the whole project is still going ahead — it's just been delayed and slightly modified."