Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
Power

Thermonuclear Reactor To Use Coconut Shells 251

destinyland writes "A key component of a $10 billion nuclear fusion plant is vintage 2002 Indonesian coconut-shell charcoal. After a 20-year search, German researchers discovered that the coconut-shell charcoal is the best medium for 'adsorbing' waste byproducts sucked out of the thermonuclear reactor's vacuum chamber. In what will be the first fusion power facility that's commercially viable, magnetic fields will heat hydrogen isotopes to over 150 million degrees Centigrade. (Essentially, the super-hot plasma creates artificial stars.) As the article points out, 'It's not quite a Starship warp drive, but it does harness the power of the sun.'"
Security

How Dangerous Could a Hacked Robot Possibly Be? 229

alphadogg writes "Researchers at the University of Washington think it's finally time to start paying some serious attention to the question of robot security. Not because they think robots are about to go all Terminator on us, but because the robots can already be used to spy on us and vandalize our homes. In a paper published Thursday the researchers took a close look at three test robots: the Erector Spykee, and WowWee's RoboSapien and Rovio. They found that security is pretty much an afterthought in the current crop of robotic devices. 'We were shocked at how easy it was to actually compromise some of these robots,' said Tadayoshi Kohno, a University of Washington assistant professor, who co-authored the paper."

Comment I've been carless for over a year now (Score 1) 1385

And have instead been relying on Philadelphia's Regional Rail to get to work. It's so much nicer than having to drive into work. Consider the following:

- 25 minute train ride versus a 45-60 minute drive

- I can read or sleep on the train. Can't do either when driving!

- I no longer have to worry about maintaining my car, insurance, gas prices, etc. Not only do I have more peace of mind, but I'm saving hundreds of dollars per month now.

I've noticed something else when dealing with public transit companies, they respect us more than car companies. Every time I took my car in for maintenance, or when I would buy a new car, I would also feel like I was being taken advantage of--it was just this unpleasant vibe I got from doing business with the dealership. But with public transportation, I don't get the same feeling.

Don't get me wrong, SEPTA has tried raising its rates and cutting service a number of times, but when that happens, there is a public outcry as passengers criticise the company en masse, and SEPTA backs down. That's the way it should be, and it's worked out pretty well so far.

Please, Mr. Obama, build more trains. I'll ride 'em!

Apple

Apple Intros 17" Unibody MBP, DRM-Free iTunes 1079

Phil Schiller delivered the keynote at MacWorld, the first after the Steve Jobs era of keynotes. Here is Engadget's live blog. The big news, predicted by many rumor sites, was the introduction of the unibody 17" MacBook Pro. As rumored, the battery is not removable, but it's claimed to provide 8 hours of battery life (7 hours with the discrete graphics): "3x the charges and lifespan of the industry standard." $2,799, 2.66 GHz and 4 GB of RAM, 320GB hard drive, shipping at the end of January. There is a battery exchange program, and there is an option for a matte display. The other big news is that iTunes is going DRM-free: 8M songs today, all 10+M by the end of March. Song pricing will be flexible, as the studios have been demanding; the lowest song price is $0.69. Apple also introduced the beta of a Google Docs-like service, iWork.com.
The Media

Dr. Dobb's Journal Going Web-Only 233

paleshadows writes "The first issue of Dr. Dobb's Journal (DDJ) was published in January 1976. A few days ago, Herb Sutter (the chair of the ISO C++ committee and a long-time DDJ columnist) announced through his latest blog post that, 'as of January 2009, Dr. Dobb's Journal is permanently suspending print publication and going web-only.' This follows an earlier announcement that PC Magazine is to become digital-only, too, as of February 2009. To those of us who enjoy reading such stuff away from the computer these are bad news, as there seems to be no other major technical programmers' magazines left standing."
Television

Octopuses Have No Personalities and Enjoy HDTV 482

Whiteox writes about an Australian researcher named Renata Pronk, who has discovered that octopuses prefer HDTV. She recruited 32 gloomy octopuses from the waters of Chowder Bay. Previously, researchers have reported little success when showing video to octopuses. Miss Pronk's insight was that the octopus eye is so refined that it might see standard PAL video, at 25 fps, as a series of stills. She tried HDTV (50 fps) and her subjects reacted to the videos of a crab, another octopus, or a swinging bottle on the end of a string. A further discovery is that octopuses show no trait of individual personalities, even though they exhibit a high level of intelligence. It would certainly be possible to quibble about the definition of "personality" employed, and whether Miss Pronk had successfully measured it.

Why Developers Are Switching To Macs 771

snydeq writes "Programmers are finding themselves increasingly drawn to the Mac as a development platform, in large part due to Apple's decision to move to Intel chips and to embrace virtualization of other OSes, which has turned Mac OS X into a flexible tool for development, InfoWorld reports. The explosion of interest in smartphone development is helping the trend, with iPhone development lock-in to the Mac environment the chief motivating factor for Apple as a platform of choice for mobile development. Yet for many, the Mac remains sluggish and poorly tuned for development, with developers citing its virtual memory system's poor performance in paging data in and out of memory and likening use of the default-network file system, AFS, to engaging oneself with 'some kind of passive-aggressive torture.' What remains unclear is whether Apple will lend an ear to this new wave of Mac-based development or continue to develop products that lock out uses programmers expect."

Comment Re:Student need a bill of rights (Score 1) 626

They force each student sign a "Student Responsibilities and Rights" document essentially stating you understand FCPS has the right to deal with you any way they please should you screw up.

Where I come from, this is called "coercion".

Also, aren't minors unable to legally agree to a contract?

Just wondering how the school could ever hope to enforce such a contract should things make their way to a court...
Power

Helium Leads to Geothermal Energy Resources 317

Roland Piquepaille writes "When we think about alternative sources of energy, we often forget the potential of geothermal energy resources. In fact, it has been estimated that accessible geothermal energy in the U.S. represents 90 quadrillion kilowatt-hours or 3,000 times the country's total annual energy consumption. So far, it has been difficult and expensive to locate good sources of geothermal energy. But now, two U.S. researchers have found a new method which doesn't require drilling. They are using the ratio of helium isotopes in surface waters to point to the best sources of geothermal energy."
Space

Meteorite Causes Illness in Peru 357

eldavojohn writes "A meteorite struck in Peru on Saturday leaving cinders, rock & water boiling out of the ground. Villagers nearby reported headaches & vomiting and attributed it to the event. From the article, 'Seven policemen who went to check on the reports also became ill and had to be given oxygen before being hospitalized, Lopez said. Rescue teams and experts were dispatched to the scene, where the meteorite left a 100-foot-wide (30-meter-wide) and 20-foot-deep (six-meter-deep) crater, said local official Marco Limache.' It's not yet clear whether this is from the meteorite, gas trapped underground that was released or a chemical reaction between the two."

Slashdot Top Deals

Living on Earth may be expensive, but it includes an annual free trip around the Sun.

Working...