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  • Apr. 9, 2013
    article
    Machine Design

    Congress told energy efficiency regulations don't address environmental problems

    An economist tells the Subcommittee on Energy and Power of the House Energy and Commerce Committee that market-oriented approaches to control pollution are much more cost-effective than government regulations such as energy efficiency mandates on vehicles and appliances...More
  • Apr. 8, 2013
    article
    Machine Design

    Wind power without wind turbines

    Electrostatic wind power harvests wind energy with no turbine blades, gearboxes, or other expensive hardware. But there are still challenges to be overcome before the concept is ready for prime time....More
  • Mar. 22, 2013
    article
    Machine Design

    Energy efficiency standards could spell an end to some induction motor types

    Efficiency standards were once confined to integral horsepower motors but may soon apply to small motors and make certain kinds impractical to manufacture....More
  • Mar. 22, 2013
    article
    Machine Design

    Plastic-film sensor may double as energy harvesting device

    A special silicone-based material normally used to sense movement could double as an energy harvesting device in situations characterized by relatively large strain and relatively low forces....More
  • Mar. 21, 2013
    article
    Machine Design

    Less wind than you might think

    A recent analysis of worldwide wind energy by UNC and Harvard researchers indicates that geophysical and climate considerations reduce the amount  of energy available for harvest from the wind to well below prior estimates....More
  • Mar. 9, 2013
    article
    Machine Design

    Kids could get a kick out of harvesting energy

    A soccer ball with a generator built-in generates enough juice to power an LED lamp for a few hours....More
  • Mar. 8, 2013
    article
    Machine Design

    Do electric cars really pollute less?

    A group of economists look at electric vehicles  and find, from the standpoint of pollution reduction, they are a mixed bag....More
  • Mar. 7, 2013
    article
    Machine Design

    First electric tiltrotor makes public debut

    Electric-powered aerial drones are on the drawing board. A new prototype by AgustaWestland shows some of the thinking that goes into these ideas....More
  • Feb. 23, 2013
    article
    Machine Design

    No more windmills: Wind catchers use Venturi technique to generate power

    Using principles analogous to those of hydroelectric dams, wind catchers from SheerWind could generate power much less expensively than conventional wind turbines....More
  • Feb. 23, 2013
    article
    Machine Design

    World's most fuel-efficient VW

    Plug-in hybrids are in the air. The XL1 hybrid from Volkswagen is billed as being the most fuel-efficient production car in the world, and even Lamborghini is getting ready to roll out a plug-in version....More
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Commentaries and Blogs
Losing $10k per car, making it up in volume
by Stephen Mraz
Posted 1 day ago
in A Skeptical Engineer
Jury out on promises, but $347 3D printer is fun
by Elisabeth Eitel
Posted 1 week ago
in Product Design Engineering
Good night! Now they want to regulate 3D printers!!
by Lee Teschler
Posted 1 week ago
in From the Editor's Desk

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