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Comets Probably Seeded Earth's Nitrogen Atmosphere
KentuckyFC writes "One of the biggest puzzles of astrobiology is the origin of the Earth's oceans and atmosphere. One favored theory is that our water is the leftovers from a bombardment of comets early in Earth's history. But the ratio of hydrogen and deuterium in the oceans doesn't match the ratio in the four comets measured so far (Halley's, Hyakutake, Hale-Bopp and C/2002 T7 LINEAR). Now a new analysis of the ratio of nitrogen-14 and 15 isotopes in these comets and on Earth places new limits on how much of our environment could have come from comets. On the one hand, the astronomers who did the work say that no more than a few percent of Earth's water could have come from comets. But on the other, they say that the ratio of nitrogen isotopes in these comets almost exactly matches the ratio in Earth's atmosphere. That suggests that while Earth's oceans must have come from somewhere else, Earth's early atmosphere was probably seeded by comets."Read more of this story at Slashdot.
Ant Mega-Colony Covers the World
Deag writes "A mega colony of one family of ants has spread all over the world. Previous mega colonies in California, Europe and Japan have been shown to be in fact one global colony. Ants from the smaller super-colonies were always aggressive to one another. So ants from the west coast of Japan fought their rivals from Kobe, while ants from the European super-colony didn't get on with those from the Iberian colony. But whenever ants from the main European and Californian super-colonies and those from the largest colony in Japan came into contact, they acted as if they were old friends."Read more of this story at Slashdot.
Record-breaking Solar Cells Tailored To Location
Urchin writes "The quality of sunlight varies depending on where you live, but off-the-shelf solar cells are all identical. A new solar cell designed by UK firm Quantasol is easily tuned to adapt to the local light conditions, which boosts its long-term performance. Its short-term performance isn't bad though — the single junction solar cell has a peak efficiency greater than any previous device, beating a world record that's stood for 21 years."Read more of this story at Slashdot.
US Sets Up Emergency Multi-Band Radio Project
coondoggie writes "Looking to help eliminate the dangerous and inefficient hodgepodge of communication and network technology used by emergency response personnel, the US Department of Homeland Security (DHS) today said it had picked 14 groups from across the country to pilot an ambitious Multi-Band Radio project. In 2008, the DHS Science and Technology Directorate awarded a $6.2 million contract to Thales Communications to demonstrate the first-ever portable radio prototype that lets emergency responders--police, firefighters, emergency medical personnel and others--communicate with partner agencies, regardless of the radio band they operate on."Read more of this story at Slashdot.
New AES Attack Documented
avxo writes "Bruce Schneier covers a new cryptanalytic related-key attack on AES that is better than brute force with a complexity of 2^119. According to an e-mail by the authors: 'We also expect that a careful analysis may reduce the complexities. As a preliminary result, we think that the complexity of the attack on AES-256 can be lowered from 2^119 to about 2^110.5 data and time. We believe that these results may shed a new light on the design of the key-schedules of block ciphers, but they pose no immediate threat for the real world applications that use AES.'"Read more of this story at Slashdot.
Images of Apollo Landing Sites Soon Available
eric.brasseur writes "The Lunar Reconnaissance Orbiter has entered lunar orbit in perfect shape. From a height of 50 km, it will image the Moon in high resolution. The hardware left by the Apollo missions will be clearly visible. The Soviet automatic probes will also be photographed. Previous best images were made by the Japanese probe Kaguya and showed a white patch where the dust had been blown away by the blast of the LM engine."Read more of this story at Slashdot.
What the US Can Learn From Europe's Pollution Credit System
Al writes "Technology Review discusses what a US carbon trading scheme could learn from the flawed European experience. Advocates of carbon-trading schemes like to point to Europe's cap-and-trade program as a model worthy of emulation, but the reality has been less than perfect. A glut of pollution credits, distributed without cost during both the first, transitional phase of the program and the current working phase, drove down the value of the EUAs. As a result, Europe's carbon dioxide emissions remain priced well below 20 euros per ton. With the price of pollution so low, economists say, industries that generate and consume energy have no incentives to change their habits; it is still cheaper to use fossil fuels than to switch to technologies that pollute less. Establishing a carbon price in the US system now, and tightening the system later, could send a dangerously wrong signal to financial markets looking to invest in new energy technologies."Read more of this story at Slashdot.
Staying In Shape vs. a Busy IT Job Schedule?
tnok85 writes "I started a new job ~7 months ago at a very large company working a 12-hour night shift (7PM-7AM) in a fairly high volume NOC. Our responsibilities extend during the night to basically cover everything but the most complex situations regarding UNIX/Windows/Linux/App administration, at which point we'll reach out to the on-calls. I live 1.5 hours away as well, so it turns into 4-5 15 hour days a week of sitting still — throw in almost an hour to get ready to leave, and a bit of time after I get home to unwind and I'm out of time to work out. Unfortunately I'm pretty sure I have a very slow metabolism, ever since I was a pre-teen I would gain weight fairly quickly if I didn't actively work out, regardless of how much or what I eat. (Barring starving myself, I suppose...) So, how does somebody who works a minimum of 60 hours over 4 days, often adding another 12 another day, and sometimes working 7-10 days straight like this, stay in shape? I can't hold a workout schedule, (which every person I've talked to in my history says is necessary to stay in shape) and I can't 'wake up early' or 'work out before bed' because I need sleep. Any thoughts/opinions/suggestions?"Read more of this story at Slashdot.
Firefox 3.5 Benchmarked, Close To Original Chrome
CNETNate writes "The tests prove it: It's the third-fastest browser in the world, and over twice as fast as Firefox 3. In terms of Javascript performance, Firefox 3.5's new rendering engine places it squarely above Opera 10's beta and Internet Explorers 7 and 8 (based on previous benchmarks), plus it's getting on for being almost as quick as the original version of Google Chrome. Also, the new location-awareness feature was testing in central London, and pinpointed yours truly to within a few hundred meters — easily enough for, say, a Starbucks Web site to tell you where your nearest Starbucks is."Read more of this story at Slashdot.
Flapping NAV Performs Controlled Hovering Flight
An anonymous reader writes "AeroVironment, Inc. was awarded a Phase II contract extension in April from the Defense Advanced Research Projects Agency (DARPA) to design and build a flying prototype for the Nano Air Vehicle (NAV) program. As part of this program AV has accomplished a technical milestone never before achieved: the controlled hovering flight of an air vehicle system with two flapping wings (video) that carries its own energy source and uses only the flapping wings for propulsion and control. Two wings for propulsion and control, nothing else."Read more of this story at Slashdot.
The Twitter Book
stoolpigeon writes "Microblogging service Twitter has undeniably been a hit, with growth rates that were at times in excess of 1400%. The growth was rapid enough that the site became well known for its periodic, and, at times, extensive downtime. Even with these issues, the service continued to grow rapidly, and with celebrities getting into the mix Twitter was quickly on the radar of mainstream media. The ubiquity of Twitter and ever-increasing coverage of 'tweets' has also brought the inevitable backlash. As with anything that gains high-profile popularity, there are plenty of Twitter haters out there, though the role Twitter has played in the recent Iranian elections seems to have brought more legitimacy to Twitter in the eyes of many. With popularity come books, and quite a few are already out there about and for Twitter, but my favorite so far is The Twitter Book by Tim O'Reilly and Sarah Milstein." Read below for the rest of JR's review.Read more of this story at Slashdot.
Blizzard Confirms No LAN Support For Starcraft 2
Kemeno writes "Blizzard has announced that they will be dropping LAN support for Starcraft II , citing piracy and quality concerns. Instead, all multiplayer games will be hosted through their new Battle.net service. I suppose I shouldn't be surprised by this move, but wasn't LAN play how the original Starcraft became popular? Blizzard said, 'More people on Battle.net means ... even more resources devoted to evolving this online platform to cater to further community building and new ways to enjoy the game online. World of Warcraft is a great example of a game that has evolved beyond anyone's imagination since their Day 1 and will continue to do so to better the player experience for as long as players support the title. ... We would not take out LAN if we did not feel we could offer players something better.'"Read more of this story at Slashdot.
The Hysteria of the Cyber-Warriors
Willfro sends in a piece by Evgeny Morozov at the Boston Review about the hyperbole and the reality of "cyber war." Quoting: "At the end of May, President Obama called cyber-security 'one of the most serious economic and national security challenges we face as a nation.' His words echo a flurry of gloomy think-tank reports. Unfortunately, these reports are usually richer in vivid metaphor — with fears of 'digital Pearl Harbors' and 'cyber-Katrinas' — than in factual foundation. So why is there so much concern about 'cyber-terrorism?' Answering a question with a question: who frames the debate? Much of the data are gathered by ultra-secretive government agencies — which need to justify their own existence — and cyber-security companies — which derive commercial benefits from popular anxiety. Journalists do not help. Gloomy scenarios and speculations about cyber-Armaggedon draw attention, even if they are relatively short on facts."Read more of this story at Slashdot.
GPS-Based System For Driving Tax Being Field Tested
An anonymous reader writes "Apparently, since gas consumption is going down and fuel efficient cars are becoming more popular, the government is looking into a new form of taxation to create revenue for transportation projects. This new system is a 'by-the-mile tax,' requiring GPS in cars so it can track the mileage. Once a month, the data gets uploaded to a billing center and you are conveniently charged for how much you drove. 'A federal commission, after a two-year study, concluded earlier this year that the road tax was the "best path forward" to keep revenues flowing to highway and transportation projects, and could be an important new tool to help manage traffic and relieve congestion. ... The commission pegged 2020 as the year for the federal fuel tax, currently 18.5 cents a gallon, to be phased out and replaced by a road tax. One estimate of a road tax that would cover the current federal and state fuel taxes is 1 to 2 cents per mile for cars and light trucks.'"Read more of this story at Slashdot.
Jim Zemlin Pitches Linux App Stores For Telcos
angry tapir writes "Mobile carriers may start giving away netbooks for free, and Linux-based application stores could help them profit by doing so, the Linux Foundation's Jim Zemlin argued at a recent forum in Beijing. 'Selling discounted netbooks to users who buy a mobile data subscription would extend a sales strategy widely used for mobile phones. Carriers often sell phones for below retail price and let a user's subscription fees make up for the loss. AT&T already sells subsidized 3G netbooks in the US, and China Mobile has announced similar plans. Carriers worldwide are likely considering the option, which lets them charge for added services like downloads of music, videos and software, said [analyst Jack Gold]. Those downloads could come from platforms like the iPhone App Store that target mainly mobile phones today. Competition could push netbook prices down as more carriers subsidize them, which would make putting Linux on the laptops an attractive way to cut costs, said Zemlin.'"Read more of this story at Slashdot.
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