hypnosec writes "Researchers have developed and open-sourced a low-cost 3D metal printer capable of printing metal tools and objects that can be build for under £1,000. A team of researchers led by Associate Professor Joshua Pearce at the Michigan Technological University developed the firmware and the plans for the printer and have made it available freely. The open source 3D printer is definitely a huge leap forward as the starting price of commercial counterparts is around £300,000. Pearce claimed that their technology will not only allow smaller companies and start-ups to build inexpensive prototypes, but it will allow other scientists and researchers to build tools and objects required for their research without having to shell out thousands, and could be used to print parts for machines such as windmills." It's a modified RepRap; looks like we're getting closer to the RepRap being able to print all of its parts.
dmiller1984 writes "The Chicago Public Schools, the third-largest public school system in the United States, announced a five-year plan today that would add at least one computer science course to every CPS high school, and elevate computer science to a core requirement instead of an elective. CPS announced this through a partnership with code.org, stating that the non-profit would provide free curriculum, professional development, and stipends for teachers."
sfcrazy writes "People are now more concerned regarding their privacy after discovering about efforts made by governments to spy on their communications. The most practical solution to keep messages, emails and calls secure is to use a cryptographic encryption mechanism. However, just like the name of the method, the installation process is complex for most users. To solve this, CyanogenMod will come equipped with built in encryption system for text messages." Whisper System has integrated their TextSecure protocol into the SMS/MMS provider, so even third party sms apps benefit. Better yet, it's Free Software, licensed under the GPLv3+. Support will debut in Cyanogenmod 11, but you can grab a 10.2 nightly build to try it out now.
mrspoonsi writes "BBC reports: Leading global technology firms have called for 'wide-scale changes' to US government surveillance. Eight firms, Google, Apple, Facebook, Twitter, AOL, Microsoft, LinkedIn, and Yahoo, have formed an alliance called Reform Government Surveillance group. The group has written a letter to the US President and Congress arguing that current surveillance practice 'undermines the freedom' of people. It comes after recent leaks detailed the extent of surveillance programs. 'We understand that governments have a duty to protect their citizens. But this summer's revelations highlighted the urgent need to reform government surveillance practices worldwide,' the group said in an open letter published on its website."
An anonymous reader writes "Scientists have discovered huge freshwater reserves beneath the seabed on continental shelves off the coast of Australia, North America, China and South Africa. 'The volume of this water resource is a hundred times greater than the amount we've extracted from the Earth's sub-surface in the past century since 1900. Fresh water on our planet is increasingly under stress and strain so the discovery of significant new stores off the coast is very exciting. It means that more options can be considered to help reduce the impact of droughts and continental water shortages' says Dr Vincent Post of the National Centre for Groundwater Research and Training (NCGRT) and the School of the Environment at Flinders University."
theodp writes "The weeklong Hour of Code kicks off tomorrow, with Mark Zuckerberg and Bill Gates doing their part to address a declared nationwide CS crisis by ostensibly teaching the nation's schoolchildren how to code. But a recent NY Times Op-Ed by economist Paul Collier criticizing Zuckerberg's FWD.us PAC as self-serving advocacy (echoing earlier criticism) serves as a reminder that Zuckerberg and Gates' Code.org and Hour of Code involvement is the Yin to their H-1B visa lobbying Yang. The two efforts have been inextricably linked together for Congress, if not for the public. And while Zuckerberg argues it's 'the right thing to do', Collier argues that there are also downsides to the tech giants' plans to shift more bright, young, enterprising people from the poorest countries to the richest. 'An open door for the talented would help Facebook's bottom line,' Collier concludes, 'but not the bottom billion.'"
Hugh Pickens DOT Com writes "Ellen Nakashima reports at the Washington Post that morale has taken a hit at the National Security Agency in the wake of controversy over the agency's surveillance activities and officials are dismayed that President Obama has not visited the agency to show his support. 'It is not clear whether or when Obama might travel the 23 miles up the Baltimore-Washington Parkway to visit Fort Meade, the NSA's headquarters in Maryland,' writes Nakashima, 'but agency employees are privately voicing frustration at what they perceive as White House ambivalence amid the pounding the agency has taken from critics.' Though Obama has asserted that the NSA's collection of virtually all Americans' phone records is lawful and has saved lives, the administration has not endorsed legislation that would codify it. And his recent statements suggest Obama thinks some of the NSA's activities should be constrained. 'The agency, from top to bottom, leadership to rank and file, feels that it is had no support from the White House even though it's been carrying out publicly approved intelligence missions,' says Joel Brenner, NSA inspector general from 2002 to 2006. 'They feel they've been hung out to dry, and they're right.' Former officials note how President George W. Bush paid a visit to the NSA in January 2006, in the wake of revelations by the New York Times that the agency engaged in a counterterrorism program of warrantless surveillance on U.S. soil beginning after the Sept. 11, 2001, terrorist attacks. 'Bush came out and spoke to the workforce, and the effect on morale was tremendous,' Brenner said. 'There's been nothing like that from this White House.' Morale is 'bad overall' says another former NSA official. 'It's become very public and very personal. Literally, neighbors are asking people, 'Why are you spying on Grandma?'"
First time accepted submitter prajendran writes "James Hansen, the former director of the Goddard Institute of Space Sciences, has been a strong defender of using nuclear energy to replace coal and renewable energy. He and three other researchers had written a letter, arguing just this. In this interview with rediff.com, an Indian news site, he was asked to address some concerns surrounding the issue, especially given the strong feelings generated by it. It may not be Hansen's best interview, but it did bring out his passionate side."
Fnord666 writes in with this link about one the development of a new unmanned toy for the U.S. Air Force. "A large, classified unmanned aircraft developed by Northrop Grumman is now flying—and it demonstrates a major advance in combining stealth and aerodynamic efficiency. Defense and intelligence officials say the secret unmanned aerial system (UAS), designed for intelligence, surveillance and reconnaissance (ISR) missions, is scheduled to enter production for the U.S. Air Force and could be operational by 2015. Funded through the Air Force's classified budget, the program to build this new UAS, dubbed the RQ-180, was awarded to Northrop Grumman after a competition that included Boeing and Lockheed Martin. The aircraft will conduct the penetrating ISR mission that has been left unaddressed, and under wide debate, since retirement of the Lockheed SR-71 in 1998."
First time accepted submitter biodata writes "The BBC is reporting that hundreds of UK commercial air flights have been delayed for most of Saturday due to an internal telephone systems problem in the National Air Traffic Control Service, and delays are likely to continue into the evening. A spokesperson said that it was a different software bug from the one which grounded flights in the summer."
the agent man writes "The Hour of Code event taking place December 9-15 has produced a number of tutorials with the goal to excite 10 millions kids to code. It's really interesting to contrast the different pedagogical approaches behind the roughly 30 tutorials. The University of Colorado's 'Make a 3D Game' tutorial wants to excite kids to code by focusing less on coding. This pedagogy is based on the idea that coding alone, without non-coding creativity, has a hard time attracting kids who are skeptical of computer science, including a high percentage of girls who think 'programming is hard and boring.' Instead, the 'Make a 3D Game' activity has the kids create sharable 3D shapes and 3D worlds in their browsers, which they then want to bring to life — through coding. There is evidence that this strategy works. The article talks about the research exploring how kids get excited through game design, and how they can later leverage coding skills acquired to make science simulations. You can try the activity by yourself or with your kids, if you're curious."
New submitter krakman writes "The Washington Post has an interesting story about how the FBI can investigate and collect details from computers over the net, without knowing anything about the computer location. Here's an example of the FBI's network investigative techniques: 'The man who called himself "Mo" had dark hair, a foreign accent and — if the pictures he e-mailed to federal investigators could be believed — an Iranian military uniform. When he made a series of threats to detonate bombs at universities and airports across a wide swath of the United States last year, police had to scramble every time. Mo remained elusive for months, communicating via e-mail, video chat and an Internet-based phone service without revealing his true identity or location, court documents show. ... The FBI’s elite hacker team designed a piece of malicious software that was to be delivered secretly when Mo signed on to his Yahoo e-mail account, from any computer anywhere in the world, according to the documents. The goal of the software was to gather a range of information — Web sites he had visited and indicators of the location of the computer — that would allow investigators to find Mo and tie him to the bomb threats. ... Even though investigators suspected that Mo was in Iran, the uncertainty around his identity and location complicated the case. Had he turned out to be a U.S. citizen or a foreigner living within the country, a search conducted without a warrant could have jeopardized his prosecution. ...But, [a court document] said, Mo’s computer did send a request for information to the FBI computer, revealing two new IP addresses in the process. Both suggested that, as of last December, Mo was still in Tehran.'"
An anonymous reader writes "Michael Nielsen has written a detailed article describing the nuts and bolts of a Bitcoin transaction. He builds the concepts from the ground up, starting with a basic, no-frills digital currency. He then examines it for flaws and tweaks the currency to patch up areas where we run into technical or security problems. Eventually, he ends up with Bitcoin, and explains how a transaction works. It's an interesting, technical read; much more in-depth than any explanation I've heard. Here's a brief snippet from a walkthrough of the transaction data: 'One thing to note about the input is that there's nothing explicitly specifying how many bitcoins from the previous transaction should be spent in this transaction. In fact, all the bitcoins from the n=0th output of the previous transaction are spent. So, for example, if the n=0th output of the earlier transaction was 2 bitcoins, then 2 bitcoins will be spent in this transaction. This seems like an inconvenient restriction – like trying to buy bread with a 20 dollar note, and not being able to break the note down. The solution, of course, is to have a mechanism for providing change. This can be done using transactions with multiple inputs and outputs...'" Bitcoin is going through another period of heavy fluctuation: it fell from a high of around $1,200 per bitcoin to roughly half that, and as of this writing trade around $760 per bitcoin.
theodp writes "Among the patents granted to Facebook this week by the USPTO is one for Inferring Household Income for Users of a Social Networking System. 'For example,' Facebook explains, 'an assumption might be made about a user that reads CNN.com and nytimes.com every day that the user is in a higher income bracket than another user that only reads TMZ.com and PerezHilton.com on the theory that a user who reads newspapers might be assumed to make more money than a user who only reads celebrity gossip blogs.' Advertisements such as those for travel packages, cars, and home mortgages, Facebook adds, 'are targeted to users based on income bracket,' which might also be inferred by 'gathering and analyzing different types of information about a user's geographic location.' Hey, what could go wrong?"