Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
Biotech

Problem-Solving Bacteria Crack Sudoku 86

techbeat writes "A strain of Escherichia coli bacteria can now solve logic puzzles – with some help from a group of students at the University of Tokyo, Japan, reports New Scientist. The team began with 16 types of E. coli, each colony assigned a distinct genetic identity depending on which square it occupied within a four-by-four sudoku grid.The bacteria can also express one of four colors to represent the numerical value of their square. As with any sudoku puzzle, a small number of the grid squares are given a value from the beginning by encouraging the bacteria in these squares to differentiate and take on one of the four colors. The Tokyo team's sudoku-solving bacteria competed in the International Genetically Engineered Machine competition at the Massachusetts Institute of Technology last week."
United States

US Objects To the Kilogram 538

Velcroman1 writes "For 130 years, the kilogram has weighed precisely one kilogram. Hasn't it? The US government isn't so sure. The precise weight of the kilogram is based on a platinum-iridium cylinder manufactured 130 years ago; it's kept in a vault in France at the International Bureau of Weights and Measures. Forty of the units were manufactured at the time, to standardize the measure of weight. But due to material degradation and the effects of quantum physics, the weight of those blocks has changed over time. That's right, the kilogram no longer weighs 1 kilogram, according to the National Institute of Standards and Technology. And it's time to move to a different standard anyway. A proposed revision would remove the final connection to that physical bit of matter, said Ambler Thompson, a NIST scientist involved in the international effort. 'We get rid of the last artifact.'"
Robotics

Robot Controlled By Rat Brain 170

kkleiner writes "Kevin Warwick, once a cyborg and still a researcher in cybernetics at the University of Reading, has been working on creating biological neural networks that can control machines. He and his team have taken the brain cells from rats, cultured them, and used them as the guidance control circuit for simple wheeled robots. Electrical impulses from the bot enter the batch of neurons, and responses from the cells are turned into commands for the device. The cells can form new connections, making the system a true learning machine."
Communications

Comcast Shoots For New Image, Rebranding As Xfinity 356

artemis writes "Comcast is making efforts to repair and restore its 'former glory' by the act of transformation, rebranding itself as Xfinity. Hopefully step 2 is an actual change in quality and customer service. 'Comcast will use the Xfinity rebranding to talk up its improved customer service as well as its technical upgrades. “There’s a lot to be proud of,’’ said Steve Hackley, Comcast’s senior vice president for the Greater Boston region. “We want to take credit for it.’’ W2 Group’s Weber said such a rebranding is “a bit old-fashioned’’ and a new name is unlikely to impress consumers. “I think the public is smarter than that now,’’ he said.'"
Power

New Material Transforms Car Bodies Into Batteries 213

MikeChino writes "As battery manufacturers race to produce more efficient lithium-ion batteries for electric vehicles, some scientists are looking to make the cars themselves a power source. Researchers are currently developing a new auto body material that can store and release electrical energy like a battery. Once perfected, scientists hope the substance will replace standard car bodies, making vehicles up to 15 percent lighter and significantly extending the range of electric vehicles."
Businesses

Zero-Day Vulnerabilities On the Market 94

An anonymous reader writes "Zero-day vulnerabilities have become prized possessions to attackers and defenders alike. As the recent China-Google attack demonstrated, they are the basis on which most of the successful attacks are crafted these days. There is an underground market growing around these vulnerabilities, but there are also 'white markets' — set up by VeriSign, TippingPoint, Google — where they buy zero-day flaws and alert the companies so that they can patch their products before the vulnerabilities can be taken advantage of."
Graphics

19th-Century Photographer Captured 5,000 Snowflakes 80

tcd004 writes "Wilson Bentley began photographing snowflakes in 1885, and managed to immortalize more than 5,000 crystals before his death in 1931. Now his images are widely recognized and highly sought after. At the age of 19, 'Snowflake' Bentley jury-rigged a microscope to a bulky bellows camera and took the first-ever photograph of a snowflake. Photography then, particularly microphotography, was much closer to science than art. In a 1910 article published in the journal Technical World, he wrote, 'Here is a gem bestrewn realm of nature possessing the charm of mystery, of the unknown, sure richly to reward the investigator." The video embedded at the link above touches on another long-forgotten piece of history: a sketch of the photographers who captured arial views of assemblages of tens of thousands of soldiers returning from WW-I, carefully choreographed and arranged to form a Liberty Bell, a Stature of Liberty, a US flag... as forgotten as the origin of the WW-I term razzle-dazzle.
The Military

Russian Stealth Fighter Makes Its First Flight 418

An anonymous reader writes "The long-awaited Russian stealth fighter, codenamed PAK FA or T-50, has had its first test flight today. This Google translation of a Russian article has a photo of the jet. Production is supposed to begin in 2015; the AP reports that India is helping with development. It's reportedly designed to compete with America's F-22 (first flight: 1997). Relatedly, according to Wikipedia, Japan is planning to fly its own stealth fighter, the ATD-X, which we have previously discussed, in 2011."
Government

UK Police Plan To Use Military-Style Spy Drones 390

krou writes "According to documents obtained by the Guardian under the Freedom of Information Act, the UK police plan on deploying unmanned drones in the UK to 'revolutionize policing' and extend domestic 'surveillance, monitoring and evidence gathering,' which will be used in 'the routine work of the police, border authorities and other government agencies.' The documents come from the South Coast Partnership, 'a Home Office-backed project in which Kent police and others are developing a national drone plan' in conjunction with BAE Systems. The stated aim is to introduce the system in time for the 2012 Olympics. Initially, Kent police stated that the system would be used to monitor shipping lanes and illegal immigrants, but the documents reveal that this was part of a PR strategy: 'There is potential for these [maritime] uses to be projected as a "good news" story to the public rather than more "big brother."' However, the documents talk about a much wider range of usage, such as '[detecting] theft from cash machines, preventing theft of tractors and monitoring antisocial driving,' as well as 'road and railway monitoring, search and rescue, event security and covert urban surveillance.' Also, due to the expense involved, it has also been suggested that some data could be sold off to private companies, or the drones could be used for commercial purposes."
Censorship

PayPal Freezes the Assets of Wikileaks.org 403

matsh sends word that PayPal has frozen the assets of wikileaks.org. From their Web site: "Paypal has as of 23rd of January 2010 frozen WikiLeaks assets. This is the second time that this happens. The last time we struggled for more than half a year to resolve this issue. By working with the respected and recognized German foundation Wau Holland Stiftung we tried to avoid this from happening again — apparently without avail." The submitter adds: "Hopefully we can pressure PayPal to resolve this quickly, since this seems like a dangerous political decision."
Media

Porn Industry Tiptoes Into 3D Video 292

itwbennett writes "The 3D porn experience is coming (eventually) to a home theater near you. Most adult filmmakers are moving slowly toward 3D video because of higher production cost, the small number of 3D TVs in the home, and, of course, the glasses. Rob Smith, director of operations at Hustler Video Group says he hopes that market penetration of 3D TVs in the home is high enough that 'by the fourth quarter of this year it will be at the point where we can justify doing a 3D product.' The average adult movie costs around $25,000 to $40,000 to make, and 3D movies cost about 30% more, says Ali Joone, founder of Digital Playground. But Joone thinks the biggest hurdle for 3D isn't so much the cost as the glasses: people don't want to be encumbered by eyewear when viewing a film, says Joone."
Social Networks

Student Banned From Minnesota Campus Over Facebook Comments 806

Be careful just how you vent online is the lesson from this story pointed out by reader kungfugleek, from which he excerpts: "A University of Minnesota student has been banned from the Twin Cities campus after three of her instructors felt threatened by some of her Facebook postings. Amanda Tatro was patted down and questioned by campus police when she got to class Monday. The 29-year-old mortuary science student had posted comments on her Facebook page after breaking up with her boyfriend. She told her Facebook friends she wanted to stab a 'certain someone in the throat' with an embalming instrument. Tatro said she was 'looking forward to Monday's embalming therapy.' When the instructors learned of the postings, they contacted police." The Star-Tribune's account offers more detail.
Censorship

Aussie Gov't To Introduce Bill That Would Require ISP-Level Censorship 200

bennyboy64 writes "iTnews reports that the Australian Government has announced its intention to introduce legislation that will make ISP-level filtering mandatory for all refused classification material hosted overseas. The Government intends to amend the Broadcasting Services Act in August 2010 to enforce the filter, and expects the filter to be operational within a further twelve months. 'The report into the pilot trial of ISP-level filtering demonstrates that blocking RC-rated material can be done with 100 percent accuracy and negligible impact on internet speed' Senator Conroy, Minister for Broadband, Communications and the Digital Economy said." This despite, as reader Sharky2009 writes, the trial run showing that "a technically competent user could circumvent filtering technology based on ACMA’s blacklist."
The Military

Laser Weapon Shoots Down Airplanes In Test 627

airshowfan writes "Boeing's directed-energy weapons (a.k.a. frickin' laser beams) have been getting some attention lately. The Advanced Tactical Laser (ATL) is a C-130 that famously burned a hole through a car's hood, and the YAL-1 AirBorne Laser is a 747 that shoots a laser from its nose that is powerful enough to bring down an ICBM. But even cooler is the Mobile Active Targeting Resource for Integrated eXperiments (MATRIX), a laser that is mounted on a truck (which probably costs less than a 747, but who knows) and that can shoot down small aircraft, as shown in the picture on this article. (The Laser Avenger supposedly also has this capability). We live in the future!"

Slashdot Top Deals

Only great masters of style can succeed in being obtuse. -- Oscar Wilde Most UNIX programmers are great masters of style. -- The Unnamed Usenetter

Working...