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Biotech

Solar Cells Made From Bioluminescent Jellyfish 82

An anonymous reader writes "Swedish researchers have devised a way to turn bioluminescent jellyfish into solar cells. It works like this: the green fluorescent protein (GFP) that makes the Aequorea victoria glow is simply dripped onto a silicon dioxide substrate between two electrodes. The protein works itself into strands between the electrodes. When ultraviolet light is shined on the circuit, voila, the GFP absorbs photons and emits electrons, generating a current. The GFP-powered cells work like dye-sensitized solar cells, but don't require expensive materials such as titanium dioxide."
Transportation

The Second Age of Airships 363

The Telegraph has a story about a new generation of airships. It says "It's a new vehicle. It's a hybrid because we're combining helium lift, aerodynamic lift, a hovercraft landing system, and vectored thrust... If you can get beyond the word airship — because that has a lot of history — people think about them differently."
Image

Lego 'CubeDudes' By PIXAR Animator 34

An anonymous reader writes "PIXAR Animator Angus MacLane has created an incredible series of LEGO 'CubeDudes' modeled after beloved characters from sci-fi movies and comic books. From Star Wars heroes R2D2 and C-3PO to Toy Story's Buzz Lightyear and Jessie, the pixellated creations bear a remarkable likeness to their forebears. MacLane says, 'When I had a moment here and there I chip away at a few at a time. I'll have the body of one Dude and a head of another that I will be working on at the same time. It takes me about 10-15 minutes to make one CubeDude and I average about two a day.' The hardest part is the color palette — LEGO doesn't make purple bricks, so villains like Lex Luthor, The Joker, and Grimace are a challenge."
Science

First Membrane Controlled By Light Developed 33

An anonymous reader writes with this excerpt: "A new membrane developed at the University of Rochester's Laboratory for Laser Energetics blocks gas from flowing through it when one color of light is shined on its surface, and permits gas to flow through when another color of light is used. It is the first time that scientists have developed a membrane that can be controlled in this way by light."
Space

Hubble Accuracy Surpassed By Earthbound Telescope 87

randuev writes "A high-speed adaptive optics system helped the Large Binocular Telescope (on Earth) to beat the accuracy of the Hubble Space Telescope's observations. 'A special sensor detects atmospheric distortions in real time and controls the mirror to adjust its position to compensate, effectively canceling out the blurring. The mirror can make adjustments every one-thousandth of a second, with accuracy to better than ten nanometers.' Now, that's what I call real-time. This nifty trick multiplied the Strehl ratio (optical quality) of the LBT by about 80 times. The new system was tested in May and June, so hopefully we'll soon see more space around us in higher resolution on Google Sky."
Education

Should Professors Be Required To Teach With Tech? 319

An anonymous reader writes "Are professors who don't update their teaching methods like doctors who fail to keep up with the latest ways to treat disease? Or are professors better off teaching old-school? From the article: 'It is tough to measure how many professors teach with technology or try other techniques the report recommends, such as group activities and hands-on exercises. (Technology isn't the only way to improve teaching, of course, and some argue that it can hinder it.) Though most colleges can point to several cutting-edge teaching experiments on their campuses, a recent national assessment called the Faculty Survey of Student Engagement suggests that old-school instruction remains the norm. Only 13 percent of the professors surveyed said they used blogs in teaching; 12 percent had tried videoconferencing; and 13 percent gave interactive quizzes using 'clickers,' or TV-remotelike devices that let students respond and get feedback instantaneously. The one technology that most teachers use regularly — course-management systems — focuses mostly on housekeeping tasks like handing out assignments or keeping track of student grades.'"
Programming

How Should a Non-Techie Learn Programming? 346

CurtMonash writes "Nontechnical people — for example marketers or small business owners — increasingly get the feeling they should know more about technology. And they're right. If you can throw up a small website or do some real number-crunching, chances are those skills will help you feed your family. But how should they get started? I started a thread with the question on DBMS2, and some consistent themes emerged, including: Learn HTML + CSS early on; Learn a bit of SQL, but you needn't make that your focus; Have your first real programming language be one of the modern ones, such as PHP or Python; MySQL is a good vehicle to learn SQL; It's a great idea to start with a project you actually want to accomplish, and that can be done by modifying a starter set of sample code (e.g., a WordPress blog); Microsoft's technology stack is an interesting alternative to some of the other technology ideas. A variety of books and websites were suggested, most notably MIT's Scratch. But, frankly, it would really help to get more suggestions for sites and books that help one get started with HTML/CSS, or with MySQL, or with PHP. And so, techie studs and studdettes, I ask you — how should a non-techie go about learning some basic technological skills?"
Open Source

Tribalism Is the Enemy Within, Says Shuttleworth 655

climenole points out a post from Canonical founder Mark Shuttleworth about internal strife in the free software community. He wrote, "Tribalism is when one group of people start to think people from another group are 'wrong by default.' It's the great-granddaddy of racism and sexism. And the most dangerous kind of tribalism is completely invisible: it has nothing to do with someone's 'birth tribe' and everything to do with their affiliations: where they work, which sports team they support, which Linux distribution they love. ... Right now, for a number of reasons, there is a fever pitch of tribalism in plain sight in the free software world. It's sad. It's not constructive. It's ultimately going to be embarrassing for the people involved, because the Internet doesn't forget. It's certainly not helping us lift free software to the forefront of public expectations of what software can be."
Biotech

Fly Eyes Used For Solar Cells 73

disco_tracy writes "Researchers took corneas from blow flies, fixed them on a glass substrate, added a polymer to protect the shape and then coated nine-eye arrays in nickel within a vacuum chamber. The result was a master template that retained those useful nanoscale features and can be used to make solar cells."
Power

Chevy Volt Not Green Enough For California 384

thecarchik writes "The first two plug-in cars from major manufacturers will go head-to-head on warranties and lease prices: $350 a month for the 2011 Chevrolet Volt, $349 for the 2011 Nissan Leaf. Now the choice shifts to other measures, including electric and overall range, as well as the plug-in perks that states like California offer to early adopters to encourage them to opt for electric cars. This is where it gets interesting. While California loves the Nissan Leaf, current regulations deny Chevy Volt buyers two significant perks: a $5,000 rebate, and permission to drive solo in HOV Lanes."

Comment CW (Morse Code) Is the Best Option (Score 1) 376

For a small radio, something like the Small Wonders Labs SW-40 is perfect. You can talk on 1 to 2 watts 1,000 miles plus with a modest dipole antenna. The downside is you need to learn Morse code (CW) but that is not too difficult. With the Koch method you can be at 10 wpm in a month. Just takes practice.
The weight is such a rig will be under 1 pound total and will give you many hours of communication.
73,
KD5TGN

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