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Secret Energy Turbine: rooftop wind power in stealth mode

Few people would argue that having a rooftop wind turbine could help offset your power bills.
Your neighbors, however, might not appreciate the sight of a windmill on your roof, nor would they like the sound of its blades whistling through the air. Don’t give up on the idea yet, though, because [...]

Rubber trailing edge flaps could result in quieter, more productive wind farms

If you’ve ever seen a commercial-scale wind turbine in real life, then you’ll know that they’re huge
– a single blade can be as long as 60 meters (197 feet). Researchers from Denmark’s Risoe DTU National Laboratory for Sustainable Energy tell us that such blades can flex by up to six meters [...]

The Horizon Fuel Cell Technologies HYDROFILL – personal desktop hydrogen station

Singaporean company Horizon Fuel Cell Technologies will release a small home hydrogen refueling and storage solution at the Consumer Electronics Show in Las Vegas later this week that could kickstart mankind’s transition to a hydrogen-based economy. The HYDROFILL is a small desktop device that plugs into the power supply, a solar panel or a small [...]

Nano-Risks: A Big Need for a Little Testing

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The EPA must act swiftly to evaluate the possible health risks of nanotechnology
A decade ago the great worry about nanotechnology was that it could quite literally destroy the planet. As Sun Microsystems co-founder Bill Joy warned in his essay “Why the Future Doesn’t Need Us,” self-assembling nanobots could potentially spread out of our [...]

Valuable, Rare, Raw Earth Materials Extracted from Industrial Waste Stream

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Fierce competition over raw materials for new green technologies could become a thing of the past, thanks to a discovery by scientists from the University of Leeds.
Researchers from Leeds’ Faculty of Engineering have discovered how to recover significant quantities of rare-earth oxides, present in titanium dioxide minerals. The rare-earth oxides, which are indispensable [...]