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Science

Your Computer Or iPad Could Be Disrupting Sleep 351

Posted by kdawson from the bright-idea dept.
Crash McBang sends in a CNN report on electronics and sleeplessness and asks, "So, what do Slashdotters do to get a good night's rest?" "More than ever, consumer electronics — particularly laptops, smartphones, and Apple's new iPad — are shining bright light into our eyes until just moments before we doze off. Now there's growing concern that these glowing gadgets may actually fool our brains into thinking it's daytime. Exposure can disturb sleep patterns and exacerbate insomnia, some sleep researchers said in interviews. ... Unlike paper books or e-book readers like the Amazon Kindle, which does not emit its own light, the iPad's screen shines light directly into the reader's eyes from a relatively close distance. That makes the iPad and laptops more likely to disrupt sleep patterns than, say, a television sitting across the bedroom or a lamp that illuminates a paper book, both of which shoot far less light straight into the eye, researchers said."
Mars

Gardening On Mars 262

Posted by CmdrTaco from the marshrooms-are-delicious dept.
Calopteryx writes "Following Obama's announcement of the intention to send humans to Mars by the mid-2030s, New Scientist reports on plans to piece together the elements of a starter kit for the first colonists of the Red Planet: 'The creation of a human outpost on Mars is still some way off, but that hasn't stopped us planning the garden.'"
Image

How Nintendo's Mario Got His Name Screenshot-sm 103

Posted by samzenpus from the can't-wait-for-the-origin-movie dept.
harrymcc writes "In 1981, tiny Nintendo of America was getting ready to release Donkey Kong. When the company's landlord, Mario Segale, demanded back rent, Nintendo staffers named the game's barrel-jumping protagonist after him. Almost thirty years later, neither Nintendo — which continues to crank out Mario games — nor Segale — now a wealthy, secretive Washington State real estate developer — like to talk about how one of video games' iconic characters got his name and Italian heritage. Technologizer's Benj Edwards has researched the story for years and provides the most detailed account to date."
Earth

Aral Sea May Recover; Dead Sea Needs a Lifeline 131

Posted by timothy from the just-needs-feng-shui-adjustment dept.
An anonymous reader writes "It's a tale of two seas. The drying up of the Aral Sea is considered one of the greatest environmental catastrophes in history, but the northern sector of the sea, at least, is showing signs of life. A dam completed in 2005 has increased the North Aral's span by 20 percent, and birds, fish, and people are all returning to the area. Meanwhile, the Dead Sea is still in the midst of precipitous decline, since too much water is being drawn out of the Jordan River for thirsty populations and crops. To keep the sea from shrinking more, scientists are pushing an ambitious scheme called the 'Red-Dead conduit,' which would channel huge amounts of water from the Red Sea to the Dead Sea. However, the environmental consequences of such a project may be troubling."
The Internet

A Crowdsourcing Project To Make Predictions More Precise 69

Posted by timothy from the what-think-ye? dept.
databuff writes "Predictions are critical to modern life. Police predict where and when crimes are most likely to take place, banks predict which loan applicants are most likely to default, and hotels forecast seasonal demand to set room rates. A new project called Kaggle facilitates better predictions by providing a platform for forecasting competitions. The platform allows organizations to post their data and have it scrutinized by the world's best statisticians. It will offer a robust rating system, so it's easy to identify those with a proven track record. Organizations can choose either to follow the experts, or to follow the consensus of the crowd — which, according to New Yorker columnist James Surowiecki, is likely to be more accurate than the vast majority of individual predictions. The power of a pool of predictions was demonstrated by the Netflix Prize, a $1m data-prediction competition, which was won by a team of teams that combined 700 models. Kaggle's first competition is underway, and it is accessing the 'wisdom of crowds' to predict the winner of this May's Eurovision Song Contest." Understandably, participation requires registration.
Bug

Toyota Acceleration and Embedded System Bugs 499

Posted by Soulskill from the bugs-that-lead-to-crashes dept.
An anonymous reader writes "David Cummings, a programmer who worked on the Mars Pathfinder project, has written an interesting editorial in the L.A. Times encouraging Toyota to drop claims of software infallibility in their recent acceleration problems. He argues that embedded systems developers must program more defensively, and that companies should stop relying on software for safety. Quoting: 'If Toyota has indeed tested its software as thoroughly as it says without finding any bugs, my response is simple: Keep trying. Find new ways to instrument the software, and come up with more creative tests. The odds are that there are still bugs in the code, which may or may not be related to unintended acceleration. Until these bugs are identified, how can you be certain they are not related to sudden acceleration?'"
Social Networks

Facebook Axes "Beacon," Donates $9.5M To Settle Suit 71

Posted by kdawson from the all-your-data-are-you-know-the-rest dept.
alphadogg sends in a Network World piece that begins "Facebook has agreed to shut down a program that sparked a lawsuit alleging privacy violations, and set up a $9.5M fund for a nonprofit foundation that will support online privacy, safety, and security. The lawsuit centers around Facebook's Beacon program, which let third-party Web sites distribute 'stories' about users to Facebook. Beacon was launched in November 2007 and less than a year later plaintiffs filed a class action lawsuit 'alleging that Facebook and its affiliates did not give users adequate notice and choice about Beacon and the collection and use of users' personal information.' ... Facebook never admitted wrongdoing but as part of a proposed settlement the company began sending notices to Facebook users this week. The settlement provides no compensation directly to users who receive the notice. Facebook users can opt out of the settlement, and should do so if they wish to pursue further legal action against Facebook related to the Beacon program. 'If you choose to do nothing and remain in the settlement class, you will be legally bound by the settlement,' a FAQ on the settlement Web site says. "By doing nothing, you will be giving up the right to sue Facebook and the other Defendants over claims related to or arising out of the Beacon program.'" Other defendents included Blockbuster, Fandango, Overstock.com, Zappos.com, and Gamefly. Neither the article nor the settlement site mentions what part, if any, they play in the settlement.
Mars

Martian Methane May Be Created By Lifeforms 297

Posted by kdawson from the little-green-bugs dept.
Following our recent discussions about the growing evidence pointing to possible life on Mars, reader skywatcher2501 writes with news of a study that has ruled out one possible explanation for the levels of methane seen on that planet — that it might be replenished by disintegrating meteors entering the atmosphere. So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism.

Comment Re:Braking (Score 2, Informative) 144

by wildsurf (#29944622) Attached to: Appeal For Commuter GPS Logs To Aid Electric Cars
Michael, you have it actually backwards. Electric cars gain energy by braking without friction. The rotating wheels of the car act as a generator, converting the car's kinetic energy into electricity with about 70% efficiency. That's why the friction brakes on my Tesla still squeak; because the regenerative deceleration is enough 98% of the time, and I rarely need to use the friction brakes.

Another nice feature of the Tesla is that the regen is triggered merely by lifting off the accelerator, so you can practically drive with one foot. It's also arguably safer, because deceleration starts immediately with no lag from moving your foot to the brake pedal.
Patents

WARF and Intel Settle Patent Suit Over Core 2 Duo 79

Posted by ScuttleMonkey from the with-a-bat'leth dept.
reebmmm writes "The Wisconsin Alumni Research Foundation (WARF) and Intel have settled their patent suit over technology developed by Gurindar Sohi, a computer science professor at the University of Wisconsin — Madison. Professor Sohi developed technology that was ultimately patented by WARF using money he received from Intel. Last month, Judge Barbara Crabb found that the funding agreement was ambiguous, but that e-mails revealed that the money was an unrestricted gift and carried with it no obligation to license or assign any inventions to Intel. Trial was scheduled to begin today. The terms of the settlement were not disclosed."
Power

Blueprint For a Quantum Electric Motor 97

Posted by ScuttleMonkey from the really-inboard-motor dept.
TechReviewAl writes "Alexey Ponomarev from the University of Augsburg in Germany and colleagues have revealed the blueprints for an electric motor built with just two atoms. The motor would have one neutral atom and one charged atom trapped in a ring-shaped optical lattice. The atoms jump from one site in the lattice to the next as they travel around the ring and placing this ring in an alternating magnetic field creates the conditions necessary to keep the charged atom moving round the the ring. A team from the University of Glasgow in the UK in fact built one of these quantum motors back in 2007, which they called an optical ferris wheel for ultracold atoms. 'The next step, say Ponomarev and co, is to attach the motor to a nanoscopic resonator, such as a spring board or nanomushroom, and make it vibrate. If you can do that, they say, you'd be powering a classical object using a quantum motor.'"

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