Note: Images and Video © Lucid Dream Productions Wind turbines designed to be installed on rooftops are generating a lot interest lately. These compact turbines can be located on top of buildings, or attached to other parts of large structures like bridges. In turns out, though, that installing wind turbine in a city environment is… [Continue Reading]
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Nutrients: Essential Elements of Healthy Teeth
September 26, 2010 by 6 Comments
Brush. Floss. See your dentist. We all know the basics of keeping our mouths healthy, but if you’re hitting the high points and still having trouble staying out of the dental chair, there could be a missing link in your overall dental health plan: nutrition. We all know that eating our fruits and veggies and… [Continue Reading]
LED Grow Lights
June 15, 2005 by 70 Comments
A lot of readers expressed interest in using red and blue LEDs for hydroponic growing. These LED lights can be found at Amazon. It is, of course, more efficient to grow plants outside, but when this is not possible, LEDs are an efficient choice.
World’s Best Cat Litter
June 30, 2005 by 59 Comments
The self-proclaimed “World’s Best Cat Litter” may be able to live up to its name. Because it is made from whole kernel corn, the litter delivers great odor control. The microporous structure of corn provides a large surface area to trap and absorb ammonia and urine odors. We like it because it is biodegradable, comes… [Continue Reading]
Unfolding Prefab: Holl House by Andrew Maynard
January 4, 2006 by 1 Comment
Andrew Maynard‘s Holl House starts off as a vertical column, then unlocks into a horizontal network of hinged structures. “How can the housing industry make exciting, well designed and cheap housing?” Maynard asks. “Easy, mimic the car industry.” “The dimensions of the basic module are dictated by the maximum dimensions available to be transported legally… [Continue Reading]
North America’s Largest Solar-Electric Plant Switched On
December 28, 2007 by 61 Comments
North America’s largest solar photovoltaic system is now running and generating power — about 30 million kilowatt-hours of electricity annually. The 14 megawatt power plant is at the Nellis Air Force Base in the sunny desert of southern Nevada. It’s expected to save about $1 million in power costs annually, and reduce carbon dioxide emissions… [Continue Reading]
AeroGarden: Easy, Efficient Indoor Gardening
February 18, 2009 by 11 Comments
In 2004, MetaEfficient.com pre-reviewed the AeroGrow aeroponics growing system. That was before the system was released. A couple of years ago, you couldn’t cut on your TV without seeing an ad for AeroGrow indoor gardening systems. It isn’t as ubiquitously advertised now, but it hasn’t disappeared from the market. In fact, five years after its… [Continue Reading]
HippoRoller Water Carrier – Simple Efficiency With A Far-Reaching Payoff
March 13, 2009 by 18 Comments
Water is an immediate, fundamental need for human survival, but one in six people worldwide don’t have immediate access to water resources, particularly in arid regions of southern Africa. The HippoRoller is a deceptively efficient water carrier with the potential to offer huge health, economic, and social benefits to developing communities.
Chainless Bikes
June 21, 2006 by 19 Comments
Besides the wheel the invention of the chain is probably what made the modern bicycle possible but ironically it’s also the bike’s biggest downside. The chain usually needs a lot of maintenance and care to keep it functioning properly and of course there’s always the risk of pant legs or loose shoelaces getting caught. If… [Continue Reading]
Aptera Test Drive A Success!
December 24, 2007 by 55 Comments
It’s the Aptera — a futuristic car that has generated a lot of buzz lately — and with good reason — the Aperta is a very, very efficient vehicle (just check out the video: you’ll see what I’m talking about). The car’s head-turning design has a purpose: the shape is highly aerodynamic (much like a… [Continue Reading]
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