energy

The Future of Cellulosic Ethanol is Green

Forget corn; we'll get fuel from all the other stuff, says DOE

"Cellulosic ethanol technology is a lot closer to reality than a lot of articles would have you think," said Jacques Beaudry-Losique, manager of the Department of Energy's Biomass Program this morning at the American Association for the Advancement of Science meeting. After some well-publicized studies stated that corn-based biofuels might exacerbate CO2 damage to the environment, focus has shifted to these so-called "second generation" biofuels that use non-food crops such as switchgrass, wood chips or crop residues (e.g. all the parts of the corn plant that are currently wasted after harvest--the stalk, leaves and "cob").

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The Greenest Green Fuel

Looking for a clean fuel that grows anywhere, needs only sunlight and water, and could produce enough oil to free the U.S. from its petroleum addiction? Here´s one start-up´s plan for converting oil from algae-yes, algae

Take a peak inside the Solix labs to see their oil-from-algae operation up close in our photo gallery and video â€Here it is!†Jim Sears says with a tour guide´s come-see enthusiasm.

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The Prophet of Garbage

Joseph Longo's Plasma Converter turns our most vile and toxic trash into clean energy-and promises to make a relic of the landfill

It sounds as if someone just dropped a tricycle into a meat grinder. Im sitting inside a narrow conference room at a research facility in Bristol, Connecticut, chatting with Joseph Longo, the founder and CEO of Startech Environmental Corporation. As we munch on takeout Subway sandwiches, a plate-glass window is the only thing separating us from the adjacent lab, which contains a glowing caldera of plasma three times as hot as the surface of the sun.

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Turning Black Coal Green

A radical new power plant aims to convert our dirtiest fossil fuel into clean-burning hydrogen

Big lumps of sooty coal hardly seem like the future of energy, but that's exactly what the U.S. Department of Energy predicts. Consumption of the fossil fuel-the main source of greenhouse gas and a major contributor to acid rain, smog and mercury poisoning-will hit 10.6 billion tons a year by 2030, a near doubling of the 5.4 billion tons burned in 2003, according to the agency.

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Missile-Proofing Runways

Homeland Security eyes high-power lasers for protecting commercial flights. Click inside for video

Sounds too futuristic to be true? See below for a video of the Skyguard system taking out mortar rounds, artillery shells and rockets

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The Race to 100 MPG

Gas prices are up, fuel economy is down-but the brightest minds in auto technology are about to do something about it

Over the past several decades, the promise of the "car of tomorrow" has remained unfulfilled, while the problems it was supposed to solve have only intensified. The average price of a gallon of gas is higher than at any time since the early 1980s. The Middle East seems more volatile than ever. And even climate skeptics are starting to admit that the carbon we´re pumping into the atmosphere might have disastrous consequences. To these circumstances, automakers have responded with a fleet of cars that averages 21 miles per gallon, about four miles per gallon worse than the Model T.

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2006 London Motor Show

Green cars galore! The U.K.'s largest auto show debuts a slew of sexy new fuel-sippers

Click here to launch the gallery.

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