Slashdot Mirror

Heffenfeffer writes: Russian company Apis Cor has manufactured a 3D printed concrete house on-site in 24 hours in Stupino Town, Russia. Using a tower crane-shaped concrete extruder that can rotate 360 degrees, the 38 square meter (408.88 square foot) rotor-shaped home walls were constructed in one day. Voids left in the manufacturing process were filled by hand, installing windows, doors, and adding polyurethane and fiber insulation to the hollow concrete walls. The roof was also constructed by hand using polymer membranes, welded together using hot air and special equipment. Total construction costs were $10,134 (USD), approximately $266.66 per square meter ($24.78 per square foot). They also constructed a temporary protective heated tent to surround the house as they constructed the house during winter. Though the printer can be used at temperatures down to -35C, concrete has to be at least +5C to cure. Further reading: Designboom Magazine

cartechboy writes "When you're in a waiting room and get hungry, what do you do? You hit the vending machine for a candy bar or some salty snack food. Now, if you're in China and you need to borrow an electric car from the local car-sharing service, you can do exactly the same thing: go and get one from the vending machine. Just like the Smart-car dispensers seen across Europe, the Kandi car-sharing service dispenses two-seat electric cars with a 75-mile range from a big tower that looks like a huge vending machine full of candy, errrrr, cars. It costs $3.25 an hour to rent one, and China hopes it'll help cut emissions from transportation. So the next time you're in China, and you need a car, just hit up the biggest vending machine you can find."

NewYorkCountryLawyer writes "In a story that may repeat itself in all mountainous areas dependent on glaciers for their water supply, the glaciers in Peru's Cordillera Blanca mountain range are melting so quickly (PDF) that the water they supply to the arid region is being threatened 20-30 years earlier than expected. Of the time needed for the region to adapt to the coming water shortages, previously thought to be decades, researchers now believe, 'those years don't exist.'"

University of Idaho scientists have figured out a more effective way to track woodpecker populations than following the incessant laughter. They're using a laser onboard NASA's Icesat spacecraft to determine where the birds might be living. From the article: "NASA's Icesat satellite was initially intended for measuring glacial surfaces at the Earth's poles but has proven to be quite effective in measuring vegetation also. The satellite's laser bounces off of forest canopies, tree trunks and the ground making important characteristics about the forest easily measurable. For example, forest density is determined by the relative amount of light returned versus that which is returned from the ground. Once ideal woodpecker locations are identified 'we actually conduct ground-based woodpecker surveys in these locations as well to verify it,' says team-member Patrick Adam."

mbone writes "The Blogoscoped site carries news that Google has purchased a German 'Microdrone' for evaluation (here is the original German version). These devices can take off, fly a mission, and land automatically using GPS. They can carry night-vision cameras or even 'see-through-walls' Far IR cameras. Of course, the maker of these drones assures us that they cannot be a 'Big Brother in the sky' because that is 'verboten.' Is it just me, or is Google entering dangerous airspace here? It seems like the ruckus from a backyard-after-dark addition to Street View could completely overshadow the legal tussles Google has already encountered with its street-level photography." Reader Jaymi clues us to another airborne effort a couple of Google employees are mounting with some help from NASA Ames: the NexusOne PhoneSat project — to determine if low-cost mobile phone components can withstand space travel.

MikeCapone writes "Scientists, using three NASA satellites, have created a first-of-its-kind map that details the height of the world's forests. The data was collected from NASA's ICESat, Terra and Aqua satellites. The latter two satellites are responsible for most of NASA's Gulf spill imagery. The data collected will help scientists understand how the world's forests both store and process carbon. While there are many local and regional canopy maps, this is the very first global map using a uniform method for measure."

jerryjamesstone writes "Everybody is into rail these days; it is the greenest way to get around next to a bike. Leonid Mulyanchik has been into it for years since before the Berlin Wall fell, since before the first Macintosh, building his own private underground Metro railway system. English-Russia says that he has been doing it with his pension, that it is all legal and approved and that he is still at it. Gizmodo calls it 'Partly the traditional, inspiring, one man against all odds type of persistence, but more the obsessive, borderline insane persistence.'" Update: 06/02 07:33 GMT by T : And if you're the type to visit Burning Man, you can actually ride a home-made monorail this summer, too.

jerryjamesstone writes "Earlier this month, General Motors hinted at a partnership with a major tech company to fully overhaul its telematics system, OnStar. While OnStar CEO Chris Preuss was tight-lipped about who that partner was, Motor Trend recently reported that it's Google. If the rumor's true, GM will make the Chevy Volt the first Android-based vehicle to hit the road. The Motor Trend article suggests 'Google would sell its Android operating system for in-car use,' while the Wall Street Journal has a slightly different take: 'The pairing would likely involve a way for users of Android-based smartphones to use OnStar features from their phone while not in their car. ... For instance, a person could find out information about their vehicle's maintenance needs through the Android phone. In the case of the Volt, GM's coming electric car, an owner may be able to keep track of the car's battery charge without being in the car.'"

hollywoodb writes "The first carbon tax to reduce the greenhouse gases from imports comes not between two nations, but between two states. Minnesota has passed a measure to stop carbon at its border with North Dakota. To encourage the switch to clean, renewable energy, Minnesota plans to add a carbon fee of between $4 and $34 per ton of carbon dioxide emissions to the cost of coal-fired electricity, to begin in 2012 ... Minnesota has been generally pushing for cleaner power within its borders, but the utility companies that operate in MN have, over the past decades, sited a lot of coal power plants on the relatively cheap and open land of North Dakota, which is preparing a legal battle against Minnesota over the tariff."

An anonymous reader writes "Researchers at the California Academy of Sciences traversed four continents and two oceans to uncover 94 new species in 2009, proving that while sometimes in this digital age the world can feel like a small place, much of it has yet to be explored. Among the 94 discoveries were 65 arthropods, 14 plants, 8 fishes, 5 sea slugs, one coral, and one fossil mammal. Why does it matter? As Dr. David Mindell, Dean of Science and Research Collections at the Academy, explained, 'Humans rely on healthy ecosystems, made up of organisms and their environments. Creating a comprehensive inventory of life on our planet is critical for understanding and managing resources. Yet a great many life-forms remain to be discovered and described.'"

Jerry James Stone writes "NASA and University of Utah chemists are developing advanced tech for testing the drinkability of water. The process just began a six-month run aboard the International Space Station. Water will be sampled either from the Space Station's or Shuttle's galley using a syringe. It is then forced through a chemically-imbued membrane, which changes color based on toxicity. The process itself will take about two minutes. It checks drinking water for iodine and silver, which are used to kill unwanted microbes."

An anonymous reader writes "Big container ships are taking it very slow these days, cruising at 10 knots instead of their usual 26 knots, to save fuel. This is actually slower than sailing freighters traveled a hundred years ago. The 1902 German Preussen, the largest sailing ship ever built, traveled between Hamburg (Germany) and Iquique (Chile): the best average speed over a one way trip was 13.7 knots. Sailing boats need a large and costly crew, but they can also be controlled by computers. Automated sail handling was introduced already one century ago. In 2006 it was taken to the extreme by the Maltese Falcon, which can be operated by one man at the touch of a button. We have computer-controlled windmills, why not computer-controlled sailing cargo vessels?"

Hugh Pickens writes "A prototype solar tree that recently went on display on a busy street in Vienna, Austria has passed a key test by providing light during the night-time even when the sun had been blocked by clouds for four days in a row. The branches of the solar tree were decorated with 10 solar lamps, each one powered by 36 solar cells. The tree included rechargeable batteries and electronic systems to measure the amount of light in the atmosphere and trigger the solar lamps to go on. 'Not just trees but other objects could be decorated with solar cells and so keep streets well lit at night time,' said Christina Werner from Cultural Project Management. Google uses a similar concept to light their parking lots with 3,000 solar panels that provide up to 10 percent of the Googleplex's power demand. We discussed Google's solar initiative last year."

JLavezzo writes "TreeHugger.com has an article today on a new wifi development organization: MIT and the UN have teamed up to provide kids living in the world's least developed nations $100 laptops, their 2 watts of juice provided by hand or foot crank. Cool, but - and this was one of Bill Gates' criticisms - what's a computer without internet access? Enter Green Wi-Fi, a non-profit that seeks to provide 'last mile internet access with nothing more than a single broadband internet connection, rooftops and the sun.' Their wi-fi access nodes, which consist of a small solar panel, a heavy-duty battery, and a router, can be linked together to extend one internet connection into a larger network. The two guys who started the company - Bruce Baikie and Marc Pomerleau - happen to be veterans of Sun Microsystems. Deployment is set to start in India at the end of this summer."

Philoneist.com writes "Treehugger is reporting that the 'Minister for Sustainable Development Mona Sahlin has declared that Sweden is going to become the first country in the world to break the dependence on fossil energy.'" Sweden's hope is to have all of the country's energy supplied by only renewable resources, ridding the country of cars that run on gasoline and oil-heated homes.

MGR writes "National Geographic is reporting that Japanese scientists have discovered a way to convert vegetable oil into biodiesel with a much less expensive catalyst (between 10 and 50 times cheaper) than what is currently used. From the article: 'Any vegetable oil can become fuel, but not until its fatty acids are converted to chemical compounds known as esters. Currently the acids used to convert the fatty acids are prohibitively expensive. Michikazu Hara, of the Tokyo Institute of Technology in Yokohama, Japan, and his colleagues have used common, inexpensive sugars to form a recyclable solid acid that does the job on the cheap.'"

agentfive writes "The people over at Treehugger have found an amazing little article on how to build a 17ft - 3kW+ output Wind Turbine. Apparently this is the latest project of OtherPower.com and the site has a variety of other engergy saving/producing projects including a Homebrew Maytag Gas Battery charger."

Dominic writes "Last week, a certain Sharp kitchen composter was the talk of the internet. But sadly, it used 300W of power to run! Not quite the perfect ideal of nature-friendlyness a composter ought to be. This week, Treehugger has a better model up, The Naturemill, which is actually available in North America, and only uses 4W of power. Best of all, it can still handle enough food waste for a family of 5. So you can get your compost on without all the hastle of a pile. And without the electric bills."

Dominic writes "Last week, a certain Sharp kitchen composter was the talk of the internet. But sadly, it used 300W of power to run! Not quite the perfect ideal of nature-friendlyness a composter ought to be. This week, Treehugger has a better model up, The Naturemill, which is actually available in North America, and only uses 4W of power. Best of all, it can still handle enough food waste for a family of 5. So you can get your compost on without all the hastle of a pile. And without the electric bills."

thpr writes "The Electric Power Research Institute and its partners have completed their Offshore Wave Power Feasibility Demonstration Project, which defined potential wave energy projects off the shores of the United States. This is building off of work already done in Scotland (and elsewhere). San Francisco, New York and other areas are considering trial installations of the technology. It is interesting to note (table 1 in the report) that the energy density (kW/m^2) that can be achieved is much higher than wind or solar. In addition, harnessing 24% of available wave energy near the US at 50% efficiency is equal to all of the hydropower currently generated in the US (~7% of total electricity production). On a separate note, in the Office of Energy Efficiency and Renewable Energy's $1.2B 2006 budget the Department of Energy is closing out the Hydropower Technologies Program. Maybe that's why this technology is missing from our National Energy Policy?" Until it reaches maturity, though, U.S. readers can pay for other forms of green energy.