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Unfolding Prefab: Holl House by Andrew Maynard

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 […]

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World’s Best Cat Litter

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 […]

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North America’s Largest Solar-Electric Plant Switched On

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 […]

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HippoRoller Water Carrier – Simple Efficiency With A Far-Reaching Payoff

HippoRoller Water Carrier (photo: HippoRoller.org)

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.

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AeroGarden: Easy, Efficient Indoor Gardening

Aerogarden: Aeroponics Kit

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 […]

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