The times haven't been the kindest to B&N: retail sales are down and the Kindle is outselling the Nook. Joining Best Buy and Dell, B&N might be going private. From the article: "Barnes & Noble’s largest shareholder, Leonard Riggio, made an offer Monday to buy out the struggling company and take it private ... Essentially, it would split the company in two: one half would be Riggio’s private brick-and-mortar stores and related assets, the other the publicly-traded Nook and college bookstore management division."

The latest Firefox for Android nightly build now features a number of changes to the UI with the goals of "...keeping a clear distinction between different types of tabs; making better use of the screen real estate on different form-factors and orientations; and being more compliant with Android’s design language. ... the tabs tray is now divided into sections for each type of tab — regular, private, and remote — so that you always keep things separate and organized. Furthermore, once you select a private tab, the main toolbar becomes dark as a clear sign that you're in a different browsing mode. ... We now use a horizontal scrolling tabs tray whenever it improves our use of the screen space. This is achieved with a TwoWayView ... We've recently landed a new skin for Firefox for Android that is more aligned with Android's Holo design language. Almost all textures and gradients were replaced by flat colors giving a much lighter feel to the browser."

First time accepted submitter AchilleTalon writes "Research by Harvard professor David Keith suggests that the global capacity for energy generation from wind power has been overestimated, and that geophysical / climate effects of turbines will reduce the benefits of large-scale power installations. 'People have often thought there's no upper bound for wind power—that it's one of the most scalable power sources," he says. After all, gusts and breezes don't seem likely to 'run out' on a global scale in the way oil wells might run dry. Yet the latest research suggests that the generating capacity has been overestimated."

OverTheGeicoE writes "TSA recently announced that it would remove all of Rapiscan's X-ray body scanners from airports by June. As part of this effort, it is trying to move a millimeter-wave body scanner from the Helena, Montana airport to replace an X-ray unit at a busier airport. Strangely enough, they have encountered resistance from the Helena's Airport Manager, Ron Mercer. Last Thursday, workers came to remove the machine, but were prevented from doing so by airport officials. Why? Perhaps Mercer agrees with Cindi Martin, airport director at Montana's Glacier Park International Airport airport, who called the scheduled removal of her airport's scanner 'a great disservice to the flying public' in part because it 'removed the need for the enhanced pat-down.'"

A couple of weeks ago you had the chance to ask Khan Academy lead developer Ben Kamens about the future of online education and the academy itself. Below you'll find his answers to the questions we sent and a few extra that he found interesting.

ananyo writes "The drowned remnants of an ancient micro-continent may lie scattered beneath the waters between Madagascar and India, a new study suggests. Evidence for the long-lost land comes from Mauritius, a volcanic island about 900 kilometers east of Madagascar (abstract) The oldest volcanic rocks on the island date to about 8.9 million years ago. Yet grain-by-grain analyses of beach sand collected at two sites on the Mauritian coast revealed around 20 zircons — tiny crystals of zirconium silicate that are exceedingly resistant to erosion or chemical change — that were far older. One of these zircons was at least 1.97 billion years old. The researchers that made the discovery think that geologically recent volcanic eruptions brought shards of the buried continent to the Earth's surface, where the zircons eroded from their parent rocks to pepper the island's sands. Analyses of Earth's gravitational field reveal several broad areas where sea-floor crust at the bottom of the Indian ocean is much thicker than normal — at least 25 to 30 kilometers thick, rather than the normal 5 to 10 kilometers. Those crustal anomalies may be the remains of a landmass that researchers have now dubbed Mauritia, which they suggest split from Madagascar when tectonic rifting and sea-floor spreading sent the Indian subcontinent surging northeast millions of years ago."

Lasrick writes "A Reuters blog post by Yousaf Butt explains the science, or lack thereof, behind recent claims that Iran is closer to building the bomb. Butt has been writing in the Bulletin of the Atomic Scientists, most recently blasting the unsourced AP 'Iranian graph' that claimed to show nuclear testing activity as well as the Washington Post story about Iran's alleged order of 100,000 magnets for their centrifuges."

An anonymous reader writes "Days after the killing of leftist blogger Thaba Baba, mosques throughout Bangladesh called for a popular uprising to demand the killing of other bloggers who had held a rally calling for the death of Jama'at-e-Islami leaders convicted of war crimes. This happens in an atmosphere of ongoing tension between Left and Right, with the leftist government threatening to outlaw rightist parties while the right uses violence to quiet selected enemies."

SchrodingerZ writes "Raymond Cusick, a production designer for the BBC show Doctor Who from 1963 to 1966, has died from illness. 'Terry Nation, who died in 1997, wrote the 1963 story The Daleks, in which the "satanic pepperpots" first appeared, but it was Cusick who came up with the machines' distinctive look, including the bobble-like sensors, eyestalk, sucker and exterminator weapons.' His horrid creation has remained a prime enemy in Doctor Who for over 50 years, and have remained relatively unchanged. His tireless work however was never fully awarded, as his only pay for the project was about £100. Cusick also worked on such shows as Z Cars, Dr Finlay's Casebook and The Forsyte Saga to The Duchess of Duke Street, When the Boat Comes In and Rentaghost. He officially retired in 1987. Claire Heawood, Cusick's daughter, has said that her father was 'suffering from an illness and died peacefully in his sleep on Thursday.'"

bill_mcgonigle writes "I just bought bitcoins from the World's first Bitcoin ATM at Liberty Forum. I created an account using an Android Bitcoin client and held up its QR code to the Raspberry Pi-based device's optical scanner. After I fed in a $20 Federal Reserve Note, I got back a confirmation QR code on its display, which I then scanned and checked the third-party confirmation URL. The machine can function on any wireless network and will soon be available for purchase by merchants, who can make a commission on customers' Bitcoin purchases."

Several readers sent word of a Mozilla announcement that 18 carriers have committed to launching phones running Firefox OS. The carriers are primarily from markets in South America and Europe. They include Deutsche Telekom, Telefonica, and Sprint. The devices running Firefox OS will be made by LG, ZTE, Huawei, and Alcatel, and all will be powered by a Qualcomm Snapdragon chipset. The new mobile operating system is built to allow HTML5 apps to run directly on the device, a solution Mozilla thinks will give it an edge when playing catch-up to all the software available for Android and iOS devices. "Developers are busy and don't have time to learn a new programming language. We believe that the only remaining eco-system is the web and there are more developers for the web than for any other platform in the world," said Jay Sullivan. According to Reuters, "Mozilla will initially look to compete in so-called 'emerging economies' in Latin America, Eastern Europe and Asia, where many people still use older phone models and have yet to upgrade to more expensive smartphones that feature touchscreens and high-speed Internet connections."

Freshly Exhumed writes "An endorsement from Oprah Winfrey; a film deal from Steven Spielberg; a debut at the top of The New York Times bestsellers list. These are the things every author craves most. While the first two require the favor of a benevolent deity, the third can be had by anyone with the ability to write a check — a pretty big one, to ResultSource, a San Diego-based marketing consultancy — in what Forbes says is essentially a laundering operation aimed at deceiving the book-buying public into believing a title is more in-demand than it is. Soren Kaplan, a business consultant and speaker, hired ResultSource to promote his book Leapfrogging. Responding to the WSJ article on his website, Kaplan breaks out the economics of making the list. 'It's no wonder few people in the industry want to talk about bestseller campaigns,' he writes. 'Put bluntly, they allow people with enough money, contacts, and know-how to buy their way onto bestseller lists.'"

An anonymous reader writes "Dozens of fans attending a NASCAR race at Daytona Speedway were injured when a crash during the last lap triggered a chain reaction, culminating in the front section of Kyle Larson's car ricocheting into the fence in front of the stands (Larson escaped injury). While the footage accompanying the article is dramatic enough, an even more riveting clip showing the chaotic scene in the stands from up close was posted on YouTube, but was taken down after NASCAR claimed it violated their copyright . YouTube has since restored the fan's video. A NASCAR spokesman has issued a clarification, saying that the takedown request was done out of respect for those injured. The race was an opening act for the main event, the Daytona 500, which officials say will proceed as scheduled. 'With the fence being prepared tonight to our safety protocols, we expect to go racing tomorrow with no changes,' Speedway President Joie Chitwood told CNN."

SchrodingerZ writes "A recent review of the Hanford Nuclear Reservation in Washington state (where the bulk of Cold War nuclear material was created) has found that six of its underground storage tanks are leaking badly. Estimations say each tank is leaking 'anywhere from a few gallons to a few hundred gallons of radioactive material a year.' Washington's governor, Jay Inslee, said in a statement on Friday, 'Energy officials recently figured out they had been inaccurately measuring the 56 million gallons of waste in Hanford's tanks.' The Hanford cleanup project has been one of the most expensive American projects for nuclear cleanup. Plans are in place to create a treatment plant to turn the hazardous material into less hazardous glass (proposed to cost $13.4 billion), but for now officials are trying just to stop the leaking from the corroded tanks. Today the leaks do not have an immediate threat on the environment, but 'there is [only] 150 to 200 feet of dry soil between the tanks and the groundwater,' and they are just five miles from the Colombia River."

Hugh Pickens writes "The rules for papal elections are steeped in tradition. John Paul II last codified them in 1996, and Benedict XVI left the rules largely untouched. The 'Universi Dominici Gregis on the Vacancy of the Apostolic See and the Election of the Roman Pontiff' is surprisingly detailed. Now as the College of Cardinals prepares to elect a new pope, security people like Bruce Schneier wonder about the process. How does it work, and just how hard would it be to hack the vote? First, the system is entirely manual, making it immune to the sorts of technological attacks that make modern voting systems so risky. Second, the small group of voters — all of whom know each other — makes it impossible for an outsider to affect the voting in any way. The chapel is cleared and locked before voting. No one is going to dress up as a cardinal and sneak into the Sistine Chapel. In short, the voter verification process is about as good as you're ever going to find. A cardinal can't stuff ballots when he votes. Then the complicated paten-and-chalice ritual ensures that each cardinal votes once — his ballot is visible — and also keeps his hand out of the chalice holding the other votes. Ballots from previous votes are burned, which makes it harder to use one to stuff the ballot box. What are the lessons here? First, open systems conducted within a known group make voting fraud much harder. Every step of the election process is observed by everyone, and everyone knows everyone, which makes it harder for someone to get away with anything. Second, small and simple elections are easier to secure. This kind of process works to elect a pope or a club president, but quickly becomes unwieldy for a large-scale election. And third: When an election process is left to develop over the course of a couple of thousand years, you end up with something surprisingly good."

cervesaebraciator writes "U.S. Representative Judy Chu (D-CA) will be starting a new caucus with the ostensible purpose of protecting the intellectual property rights of filmmakers, musicians and other artists. The new caucus, styled the Congressional Creative Rights Caucus, will be formed along with Rep. Howard Coble (R-NC). Chu's office released a statement, including the following: 'American innovation hinges on creativity – it is what allows our kids to dream big and our artists to create works that inspire us all. The jobs that result are thanks entirely to our willingness to foster creative talent, and an environment where it can thrive and prosper. [...] The Congressional Creative Rights Caucus will serve to educate Members of Congress and the general public about the importance of preserving and protecting the rights of the creative community in the U.S. American creators of motion pictures, music, software and other creative works rely on Congress to protect their copyrights, human rights, First Amendment rights and property rights.'"

Kagetsuki writes "There's a project on KickStarter for a Free and Open set of emoji [the graphical emoticon glyph set which has a block reserved in Unicode]. Currently there are no full sets of Emoji that are completely free (as in beer and and freedom), so if this project gets funded it will be the first and only set of emoji that can, say, be distributed with FLOSS Linux/BSD/GNU systems. Not to mention anyone will be able to incorporate them into any project without any restrictive conditions." And lest you think emoji devoid of literary value, reader coondoggie points out that the Library of Congress has just welcomed (or at least allowed) onto its vaunted shelves an all-emoji version of Melville's Moby Dick, created with the help of translators working through Amazon's Mechanical Turk.

An anonymous reader writes "Stanford researcher Jonathan Mayer has contributed a Firefox patch that will block third-party cookies by default. It's now on track to land in version 22. Kudos to Mozilla for protecting their users and being so open to community submissions. The initial response from the online advertising industry is unsurprisingly hostile and blustering, calling the move 'a nuclear first strike.'"

kthreadd writes "Minix, originally designed as an example for teaching operating system theory which was both inspiration and cause for the creation of Linux has just been released as version 3.2.1. Major new features include full support for shared libraries and improved support for USB devices such as keyboards, mice and mass storage devices. The system has received many performance improvements and several userland tools have been imported from NetBSD."

Z80xxc! writes "The White House Office of Science and Technology Policy announced a "policy memorandum" today requiring any federal agency with over $100 million in R&D expenditures each year to develop plans for making all research funded by that agency freely available to the public within one year of publication in any peer-reviewed scholarly journal. The full memorandum is available on the White House website. It appears that this policy would not only apply to federal agencies conducting research, but also to any university, private corporation, or other entity conducting research that arises from federal funding. For those in academia and the public at large, this is a huge step towards free open access to publicly funded research." Edward Tufte calls the move timid and unimaginative, linking to a Verge article that explains that it's not quite as sweeping as the summary above sounds.