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Green buildings

Recurve app speeds home energy efficiency audits

Recurve, which provides home energy-efficiency services, has been leading the double life as a software company.

The San-Francisco-based company on Monday announced Recurve Software, an application aimed at home energy-efficiency contractors. The first module of a planned suite, the program lets professionals generate a home-efficiency report with recommendations and a proposal for work, such as air sealing and insulation.

Recurve hopes the hosted application will automate some of the tasks for home performance contractors, many of which can be small shops, said Adam Winter, the senior vice president of building science. The application runs on tablet PCs, which can run … Read more

New Delhi stadium gets 1-megawatt solar roof

Thyagaraj Stadium in New Delhi has installed a megawatt's worth of solar panels on its roof, Suniva announced Thursday.

Suniva, which was chosen as the supplier for the solar roof, is an Atlanta-based solar-cell and module manufacturer. Suniva secured $50 million to build a commercial production facility in Atlanta in February 2008. The company licensed technology invented at Georgia Tech: extremely thin high-efficiency monocrystalline silicon solar cells that are less than 100 microns thick and claim 20 percent efficiency. Those cells, however, are not yet ready for market. Suniva's 200-micron thin (+/- 20) ArtiSun solar cells were used … Read more

Sheriff wants inmates to pedal for TV rights

If you're looking for a weight loss boot camp, the Tent City Jail in Phoenix may be your solution. Controversial Maricopa County Sheriff Joe Arpaio, who dubs himself "America's toughest sheriff," is providing the inmates there with a new amenity: cable television. But to watch their favorite shows, they're going to have to pedal.

Arpaio installed an energy-generating stationary bike (PDF) attached to a TV when he found that 50 percent of the inmates were overweight, many morbidly so. As long as an inmate is pedaling, the bike will produce 12 volts of energy--just enough to power a 19-inch tube TV. But if an inmate stops pedaling at a moderate speed, the TV shuts off.

Because inmates can't be forced to exercise, access to cable TV could provide incentive for them to do so. Female prisoners will test the program first, because they were more receptive to it, Arpaio says.

This isn't Arpaio's first attempt to trim inmates' waistlines. Some years back, he cut inmates' food intake from 3,000 calories to 2,500 calories. "You're too fat," CNN reported Arpaio as saying to the inmates. "I'm taking away your food because I'm trying to help you. I'm on a diet myself. You eat too much fat."

"America's toughest sheriff" hasn't always had an easy time implementing his standards, which have included assembling a female chain gang and making inmates pay $10 every time they need to see a nurse. Human-rights groups consider Tent City jail to be among the harshest in the nation, according to CNN, and numerous civil-rights lawsuits have been filed against the sheriff.

The program that Arpaio is calling "Pedal Vision" might be received with less criticism, though. Watching TV while serving time is a privilege, not a right, so inmates are choosing to take advantage of it. But what if every prisoner pedaled to produce energy? … Read more

Crowdsourcing start-up aims to change the world

Want to change the world but only have 99 cents? Armchair Revolutionary is here to help.

Set to launch into beta on Tuesday, Armchair Revolutionary is a Web-based social activism platform designed to harness large-scale crowdsourcing and the boom in social gaming in a bid to support a wide variety of science and technology ventures that could benefit the world at large.

Started by the founders of The Hollywood Hill, said to be the largest social change membership organization in the entertainment-industry, Armchair Revolutionary is meant to bring people's interest in helping support worthwhile causes and the iTunes-era simplicity … Read more

Raise high the 'smart roof' carpenters

A group of scientists with funding from the Department of Energy has presented a new type of roof coating that would allow all the benefits and none of the drawbacks of black and white roofs combined.

It's long been agreed that a white roof, because it naturally reflects sunlight, reduces the amount of heat a building absorbs in extremely hot and sunny situations, thus, contributing to keeping the building cool (think Greece). Some have even gone as far as to propose white "green" roofs as a geoengineering idea for reducing global warming because they may both reduce air conditioning use and reflect more sunlightRead more

L.A. ranks first for Energy Star buildings

The Environmental Protection Agency (EPA) announced Tuesday that Los Angeles has more Energy Star-rated buildings than any other city in the U.S.

The news came as part of the EPA's release of a report ranking the top 25 U.S. cities by the number of Energy Star-labeled buildings within its borders. (PDF)

Los Angeles, notorious for its smog problem, remains in first place since last year with 293 Energy Star-labeled buildings, followed by Washington, D.C. (204), San Francisco (173), Denver (136), Chicago (134), Houston (133), Lakeland, Fla. (120), Dallas-Fort Worth (113), Atlanta (102), and New York (90).… Read more

Toshiba says good-bye to incandescent era

Toshiba announced Wednesday it has produced its last major run of incandescent lightbulbs.

The Japanese electronics manufacturer said the phaseout is part of a strategy to ultimately concentrate on LED (light-emitting diode) lighting products, though it will continue to produce certain specialty incandescent bulbs.

Incandescent lighting has been dwindling in use over the last five years in large part to citizen and government phase-out campaigns that include laws for an eventual ban on the sale of the electricity-guzzling light source. Many countries have already passed laws with deadlines looming.

Australia was the first country to ban the sale of incandescent … Read more

At Singularity University, blowing minds and taking meetings

MOUNTAIN VIEW, Calif.--For Rob Nail, Saturday was a bonanza of opportunity.

Over dinner that night in building 20 at the NASA Ames Research Center here, Nail found himself discussing 3D printing and housing with X Prize CEO Peter Diamandis. Already, Nail had been considering buying some farming land in Northern California and had been interested in the nascent concept of 3D printed buildings. He told Diamandis that he wanted to try that on the land.

"He says," Nail recalled, "I want to make this introduction," and grabbed Nail, pulling him a few tables over to … Read more

Utilities: Green tech good for planet, bad for business

More than 70 percent of U.S. electric utilities have implemented, or have plans to implement, wind and solar projects within the next three to five years, despite concerns about when they will pay off, according to the results of a survey released this week by Black & Veatch.

About 79 percent of survey participants said their utility had a wind power project already in development or planned within the next three to five years, while 73 percent said the same of solar projects.

The investment choice makes sense, given the fact that wind energy ranked second as the technology … Read more

IBM touts Smarter Buildings push

IBM is hoping to use technology to create greener, smarter buildings.

Big Blue announced Monday that it will team up with partners and customers to venture into the next phase of its Smarter Planet initiative: Smarter Buildings. The goal is to help buildings, manufacturing plants, and other facilities consume less energy and water and make them easier to operate.

Announced Monday, one of IBM's new partnerships is with Johnson Controls, a manufacturer of products that optimize energy use in buildings. The two plan to combine Johnson's energy-efficient technologies with IBM's Tivoli software to offer customers a way … Read more