Eco20/20

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Technology Review has an article on a new system from Ener-G-Rotors which harvests energy from low temperature waste heat - Electricity from Waste Heat. Factories, data centers, power plants--even your clothes dryer--throw off waste heat that could be a useful source of energy. But most existing heat-harvesting technologies are efficient only at temperatures above 150 °C, and much waste heat just isn't that hot. Now Ener-G-Rotors, based in Schenectady, NY, is developing technology that can use heat between 65 and 150 °C.

The ABC recently had a report on plans to power north-west Queensland with low temperature geothermal power using hot water from the Great Artesian Basin. A Brisbane-based company says it could supply geothermal power to all of north-west Queensland. Clean Energy Australasia wants to build a $50 million geothermal power station near Longreach. But it has now also revealed plans to build a pilot geothermal project near BHP's Cannington mine at McKinlay, south of Cloncurry. The company's Joe Reichman says the Mount Isa region needs about 500 megawatts of power a year and geothermal resources could easily provide that. "It'll change the region into a powerhouse," he said. Mr Reichman says the company has applied for federal and state government grants and has support from the major mining companies in the region. If the projects proceed they would be the first geothermal power plants in Australia.

Energy independence is still only a hypothetical goal for the U.S., but the owner of a tiny island off the coast of Connecticut says he has already achieved that feat and is offering his work as a model. Dean Kamen, inventor of the Segway and numerous medical devices, jokingly refers to his North Dumpling Island as an independent nation and himself as Lord Dumpling. Kamen claims to have his own currency and offers visas to visitors to the tiny island a few miles from Mystic, where he is the only resident.

A new kind of silent hero has joined the fight against climate change. Santa Coloma de Gramenet, a gritty, working-class town outside Barcelona, has placed a sea of solar panels atop mausoleums at its cemetery, transforming a place of perpetual rest into one buzzing with renewable energy. Flat, open and sun-drenched land is so scarce in Santa Coloma that the graveyard was just about the only viable spot to move ahead with its solar energy program. The power the 462 panels produces - equivalent to the yearly use by 60 homes - flows into the local energy grid for normal consumption and is one community's odd nod to the fight against global warming.

Is it Possible to Increase Your Vehicle Gas Mileage Today, To Convert Your Car To Run On Water And Save Over 40% Of Fuel Cost Every Month? The real Truth: Water can be used as a supplement to gasoline that will extend your gas millage 40% or more. In fact, using water and gas together can not only increase your vehicle's fuel efficiently it can improve emissions quality, and save you money. Check out the video below to see how you can run your car on water.

It was a day when the shift from the past to the future was almost palpable. It started Thursday morning in Berkeley where Green Wombat was moderating a panel of tech luminaries gathered at the University of California's Global Technology Leaders Conference. As Shai Agassi, founder of electric car infrastructure company Better Place, makes the case for harnessing Silicon Valley's technological innovation to Detroit's manufacturing might to create a sustainable car industry, dispatches from the automotive apocalypse roll down my BlackBerry: Ford (F) shares sink to $1.01…GM's (GM) stock falls to its lowest level since World War II…U.S. automakers beg for a bailout…California Congressman Henry Waxman ousts Michigan's John Dingell - the Duke of Detroit - from his 28-year chairmanship of the powerful House Energy and Commerce Committee. Agassi slips out of the conference and an hour later I catch up with him across the Bay at San Francisco City Hall where he and representatives of Governor Arnold Schwarzenegger and the mayors of San Francisco, San Jose and Oakland announce a $1 billion project to build a regional network of electric car charging stations. Better Place has signed similar deals with governments in Israel, Denmark and Australia, but California is the company's first foray into the U.S. market. Planning for the Bay Area network begins in 2009 with construction scheduled to start in 2010 and commercial rollout set for 2012.

The designers, engineers, and others tackling the environmental problems we face never cease to come up with amazingly imaginative ideas. Here are some of our favorite recent projects:

SLE stands for Systemic lupus erythematosus (SLE).It is a chronic inflammatory disease of unknown cause that affects multiple organ systems. Immunologic abnormalities, especially the production of a number of antinuclear antibodies, are another prominent feature of this disease. Its multisystemic manifestations and the complications from the use of immunosuppressive agents make the diagnosis and management of this entity challenging.

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Australian mining firms, hit by high fuel costs and falling commodity prices, could soon swap their diesel generators for 24-hour, solar-power systems, the head of a private renewable power firm said on Thursday. Mining firms are also worried about an emissions trading scheme set to begin in Australia in 2010, Steve Hollis, CEO of Sydney-based Lloyd Energy Storage, told Reuters in an interview.

f a project isn't sold to the community it will struggle to gain public acceptance There are suddenly plans for a lot of wind-based power generation blowing into Washington's Pacific County, possibly a hint at what may occur in many of the coastal counties of Oregon and Washington in the years ahead. A "joint operating agency" of Washington state electricity providers is planning an 82-megawatt wind turbine farm in the Naselle area, with completion of up to 45 wind turbines eyed in 2011. A smaller, very interesting four-turbine project is getting started in northern Pacific County and southern Grays Harbor County. In total, all this may be enough to power some 40,000 average-sized homes.

Here's a wave power technology which you may not have heard of: It's called the Searaser and (though only in prototype stages, I've got some reservations about how well it may scale up, as well as the name which somehow I always see as 'Sea Eraser') it may be worth watching. The principle is fairly simple and proven in a different context: Use the Searaser to pump quantities of sea water up a hill where it can be stored in ponds until needed and then released downhill to drive hydroelectric turbines to create power. This is how the Searaser works:

will deliberate over the next six months to formulate an action plan that will be