theodp writes "The real problem nowadays is how to move crowds,' said the manager of the failed Trottoir Roulant Rapide high-speed (9 km/h) people mover project. 'They can travel fast over long distances with the TGV (high-speed train) or airplanes, but not over short distances (under 1 km).' Slate's Tom Vanderbilt explores whether moving walkways might be viable for urban transportation. The first moving sidewalks were unveiled at Chicago's 1893 Columbian Exposition, and at one point seemed destined to supplant some subways, but never took root in cities for a variety of reasons. Vanderbilt turns to science fiction for inspiration, where 30 mph walkways put today's tortoise-like speed ranges of .5-.83 m/s to shame. In the meantime, Jerry Seinfeld will just have to learn to live with 'the people who get onto the moving walkway and just stand there. Like it's a ride.'"

eldavojohn writes "Working from the comfort of his home, Salman Khan has made available more than 1,500 mini-lectures to educate the world. Subjects range from math and physics to finance, biology, and current economics. Kahn Academy amounts to little more than a YouTube channel and one very devoted man. He is trying to provide education in the way he wished he had been taught. With more than 100,000 video views a day, the man is making a difference for many students. In his FAQ he explains how he knows he is being effective. What will probably ensure his popularity (and provide a legacy surpassing that of most highly paid educators) is that everything is licensed under Creative Commons 3.0. He only needs his time, a $200 Camtasia Recorder, an $80 Wacom Bamboo Tablet, and a free copy of SmoothDraw3. While the lecturing may not be quite up to the Feynman level, it's a great augmenter for advanced learners, and a lifeline for those without much access to learning resources."

crimeandpunishment writes "This one sounds too good to be true: surf the Web, and you'll be helping the government. The FCC is looking for 10,000 volunteers to take part in a study to determine if broadband providers are really providing Internet connections that are as fast as advertised. The broad look at broadband will involve special equipment installed in homes across the country to measure Internet connections and compare them to advertised speeds." Here's where to go to apply.

almehdaaol writes "New military recruits are coming in physically heavier and out of shape, so the US Navy has decided to take an interesting course of action by creating a new training regimen inspired by the fitness-centric Wii Fit and Dance Dance Revolution." This comes alongside a report confirming some of the BS we told our parents when we were growing up: "Bavelier said playing the kill-or-be-killed games can improve peripheral vision and the ability to see objects at dusk, and the games can even be used to treat amblyopia, or lazy eye, a disorder characterized by indistinct vision in one eye. She said she believes the games can improve math performance and other brain tasks."

ChiefMonkeyGrinder writes "In response to a comment on yesterday's blog, Simon Phipps writes about the old rivalry between the Free Software Foundation and the Open Source Initiative (OSI). 'I have been (and in plenty of ways still am) a critic of OSI, as well as a firm supporter and advocate of the FSF. I believe OSI should be a member organisation with a representative leadership. ... But the OSI still plays a very important and relevant role in the world of software freedom.' For instance: Licence approvals have become a much more onerous process, with the emphasis on avoiding creation of new licences, updating old or flawed ones, and encouraging the retirement of redundant ones. It would be great to see the stewards of some of the (in retrospect) incorrectly approved licences ask for their retirement."

otter42 writes "It seems that X-37B couldn't stay hidden forever. Launched a few weeks ago, The Flying Twinkie disappeared shortly after separation. Now it has been found in an orbit that takes it as far north as 40 degrees latitude. No additional information has been found about the spacecraft's capabilities or purpose, except for a US Air Force statement that the satellite has no space-weapons purpose. The X-37B is intended to fly for 9 months at a time, opening the door to possible space longevity experiments in addition to its spying tasks."

A few days back we discussed some of the problems caused by the demise of Intelsat's Galaxy 15, including possible degradation of GPS and its WAAS refinement. Now reader crimeandpunishment writes in with another damage scenario, one which could affect vastly more people — interference with cable TV programming across the US. "A TV communications satellite is drifting out of control thousands of miles above the Earth, threatening to wander into another satellite's orbit... Galaxy 15 continues to receive and transmit satellite signals, and they will probably interfere with the second satellite, known as AMC 11, if Galaxy 15 drifts into its orbit as expected around May 23... [A spokesman] said one option would be using AMC 11's propulsion system to shift that satellite about 60 miles (100 kilometers) away to an orbit that's still within its carefully prescribed 'orbital box' but as far away as possible from Galaxy 15."

1sockchuck writes "In the past year we've seen several new cooling systems that submerge rack-mount servers. Now liquid immersion cooling is coming to blade servers. Liquid-cooled PC specialist Hardcore Computer has entered the data center market with Liquid Blade, which features two Intel 5600 Xeon processors with an S5500HV server board in a chassis filled with dielectric fluid. Hardcore, which is marketing the product for render farms, says it eliminates the need for rack-level fans and room-level air conditioning. In recent months Iceotope and Green Revolution Cooling have each introduced liquid cooling for rack-mount servers."

Catullus writes "Following in the footsteps of Tetris and Minesweeper, the simple yet addictive multiplatform game Flood-It is the latest puzzle to be proven to be hard — NP-hard, to be exact. This means that there's no way to write an efficient program to beat the game, unless P=NP. This research by computer scientists from Bristol University raises the intriguing question: are these games fun precisely because they're hard for computers to solve, and need a spark of human creativity?"

WrongSizeGlass writes "AP is reporting the owner of Venezuela's only remaining TV channel that takes a critical line against President Hugo Chavez was arrested Thursday. 'Guillermo Zuloaga, owner of Globovision, was arrested on a warrant for remarks that were deemed "offensive" to the president,' Attorney General Luisa Ortega said. This comes on the heels of last week's story titled Venezuela's Chavez To Limit Internet Freedom."

At ten minutes past midnight the FCC released their National Broadband Plan. Judging by the available coverage, few reporters spent the night poring over it. The BBC at least posted something in the morning hours, but it quotes Enderle, so that gives you some idea of its sourcing. Business Week notes the plan's cool (not to say frigid) reception among broadcasters. Dave Burstein of FastNet News did some real digging. His take as of 4:00 am Eastern time is that the plan will cost most Americans money, and won't provide much if any relief to the poor. We'll see many more details and nuances emerge over the day. Update: 03/16 19:53 GMT by KD : The FCC plan (PDF) is here.