Green Technology

Green technology is technology that produces clean energy, helps repair environmental damages or offers solutions to wasteful practices.

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Energy efficiency is starting to rank right up there with speed and power in terms of desirable attributes for a computer. What are five of the most energy-efficient computers on the market?

By Maria Trimarchi

The Northeast Blackout of 2003 left millions without power and cost approximately $6 billion. Experts believe we can avoid future blackouts by storing energy along the U.S. electric grid.

By Susan L. Nasr

We're still a long way from a supposedly paperless age, but companies have come up with some ideas on how to squeeze more from a tree. How does high-yield paper rate among the spectrum of green products available?

By Jacob Silverman

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Why would Los Angeles and Pittsburgh set out to convert a combined 180,000 traditional high-pressure sodium and mercury-vapor street lamps to LED lighting?

By Jacob Silverman

How much energy does your TV use when it's plugged in all night? How much power is your stereo system draining from the socket monthly? The Kill A Watt and other energy monitors help you find out.

By Julia Layton

Cellulosic ethanol can be made from any old stem, leaf or tree trunk. Farm wastes, grass clippings and recycled newspaper will work, too. So when can we expect this alternative fuel to arrive at gas stations?

By Susan L. Nasr

Children love to play, so why not harness the energy of their motion to help support a community. How does the PlayPump convert the push of a merry-go-round into clean water?

By Stephanie Watson

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Gasification could represent a second chance for coal. Will this old technology, which can run on coal or biomass, get a new life as one of the most important energy alternatives of the future?

By William Harris

Sometimes you need to reinforce roads or retain walls without breaking out the concrete and rebar. That's where a simple, ingenious technology comes in.

By Julia Layton

That's not just any mud. That's a fossil fuel that's stashed away in huge quantities in deposits all over the Earth's crust. Could that frozen fuel also heat up the planet?

By William Harris

Alternative energy usually means something is mined, refined, collected or grown. But gravity-powered floor lamps rely only on a force of nature -- and the strength of a human being.

By Julia Layton

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Photovoltaic solar panels are like windows -- they build up a coating of grime that requires a good cleaning from time to time. What's the alternative to climbing the roof with a squeegee and bucket of suds?

By Maria Trimarchi

Solar energy is clean and plentiful. There's one big problem, though: The sun doesn't shine all the time. Is there a way to keep solar plants powered up through the night?

By Julia Layton

You know what geothermal energy is -- heat from the Earth. Could a new twist on geothermal power help countries achieve energy independence?

By Susan L. Nasr

Without a doubt, plastic is useful. It's also everywhere — filling up landfills and recycling bins. These 10 twists on the common polymer are trying to change that reality.

By Maria Trimarchi, Patrick J. Kiger & Vicki M. Giuggio

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Plants produce energy so perfectly: converting sunlight, carbon dioxide and water into power and emitting nothing harmful in the process. Can we imitate such an elegant system?

By Julia Layton

Some of the newest ideas in technology come from very old ideas -- they're inspired by nature. How do the plants and animals around us give engineers ideas?

By Jonathan Strickland

Do you find it easy being green? If you're one of the millions of smartphone users out there, these applications will help you make being green even easier.

By Jonathan Strickland

Eco-plastic seems like an oxymoron, and it very well may be. What exactly is eco-plastic, and does it really help the environment?

By Julia Layton

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You probably ignore most billboards, especially those annoying ones that read, "If you lived here, you could be home by now!" But what if that giant ad you drove past were alive?

By Robert Lamb

There's nothing that innovative about a tricycle or a water filtration system -- but when the two are combined, it's a different story. The Aquaduct Mobile Water Filtration Vehicle might be the answer to water scarcity and contamination.

By Cristen Conger