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Earth

MIT Unveils Portable, Solar-Powered Water Desalination System 117

An anonymous reader writes "A team from the Massachusetts Institute of Technology's Field and Space Robotic Laboratory has designed a new solar-powered water desalination system to provide drinking water to disaster zones and disadvantaged parts of the planet. Desalination systems often require a lot of energy and a large infrastructure to support them, but MIT's compact system is able to cope due to its ingenious design. The system's photovoltaic panel is able to generate power for the pump, which in turn pushes undrinkable seawater through a permeable membrane. MIT's prototype can reportedly produce 80 gallons of drinking water per day, depending on weather conditions."
Australia

Fine-Structure Constant Maybe Not So Constant 105

Kilrah_il writes "The fine-structure constant, a coupling constant characterizing the strength of the electromagnetic interaction, has been measured lately by scientists from the University of New South Wales in Sydney, Australia and has been found to change slightly in light sent from quasars in galaxies as far back as 12 billion years ago. Although the results look promising, caution is advised: 'This would be sensational if it were real, but I'm still not completely convinced that it's not simply systematic errors' in the data, comments cosmologist Max Tegmark of MIT. Craig Hogan of the University of Chicago and the Fermi National Accelerator Laboratory in Batavia, Ill., acknowledges that 'it's a competent team and a thorough analysis.' But because the work has such profound implications for physics and requires such a high level of precision measurements, 'it needs more proof before we'll believe it.'"
News

Ray Kurzweil Responds To PZ Myers 238

On Tuesday we discussed a scathing critique of Ray Kurzweil's understanding of the brain written by PZ Myers. Reader Amara notes that Kurzweil has now responded on his blog. Quoting: "Myers, who apparently based his second-hand comments on erroneous press reports (he wasn't at my talk), [claims] that my thesis is that we will reverse-engineer the brain from the genome. This is not at all what I said in my presentation to the Singularity Summit. I explicitly said that our quest to understand the principles of operation of the brain is based on many types of studies — from detailed molecular studies of individual neurons, to scans of neural connection patterns, to studies of the function of neural clusters, and many other approaches. I did not present studying the genome as even part of the strategy for reverse-engineering the brain."
Image

Rupert Murdoch Claims To Own the 'Sky' In 'Skype' 186

Crudely_Indecent writes "Not content to own just news stories, Rupert Murdoch is now going after individual words! His BSkyB is fighting a legal battle with Skype, claiming that it owns the 'Sky' in 'Skype.' From the article: 'A spokesman for Sky confirmed that the company has been involved in a "five-year dispute with Skype" over trademark applications filed by the telecomms company. These are, the spokesman added: "including, but not limited to, television-related goods and services."'"
The Internet

Woman's Nude Pics End Up Online After Call To Tech Support 197

Tara Fitzgerald couldn't find the nude pictures she planned on sending to her boyfriend, but instead of just taking more, she decided to see if a Dell tech support call could fix her problem. Apparently the tech support guy found them. Unfortunately, he then put them up on a site called "bitchtara."
Image

Prince Says Internet Is Over 450

the_arrow writes "According to the artist currently known as Prince, 'The internet's completely over.' At least that what he says in an interview with the British newspaper Mirror. Quoting Prince: 'The internet's like MTV. At one time MTV was hip and suddenly it became outdated. Anyway, all these computers and digital gadgets are no good. They just fill your head with numbers and that can't be good for you.'"
Biotech

Frog Foam Photosynthesis 21

Garrett Fox writes "University of Cincinnati researchers describe a method of getting photosynthesis from a high-surface-area foam containing enzymes that produce sugar using light and CO2 (abstract). Oddly, the foam itself is derived from a species of frog. More interesting is that the technique doesn't use whole cells or apparently even chloroplasts. The researchers claim 'chemical conversion efficiencies approaching 96%,' as well as tolerance for deliberately high-CO2 environments."

Comment Re:Not on my roof (Score 1) 402

Talking about efficiency: Does anyone know what is the actual efficiency we can expect from monocrystalline and polycrystalline solar cells? The 22% that is being claimed is possible only under standard test conditions. Another problem is the performance under diffused radiation. In countries like Singapore even though there is lot of solar radiation, 70% of the radiation is diffused (reflected by clouds, ground, etc). Does PV cells provide the same efficiency under diffused radiation? Any information on this is appreciated. The real efficiency is crucial for evaluating the costs because if the panels are not producing at peak efficiency most of the time the payback period will be much longer.

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