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Energy Archive

  • Safer, Higher-Capacity Batteries

    Silver-zinc battery chemistry could replace lithium ion in laptops and other electronics–if such batteries can be made cheaply enough.

    5 comments

  • More Efficient Solar Cells

    A semiconductor material with three energy bands uses more sunlight, by trapping low-energy photons.

    14 comments

  • A Dangerous Energy Climate

    Panelists at the Emerging Technologies Conference voiced an urgent need for aggressive policies to promote energy efficiency, renewable power sources, and carbon sequestration.

    13 comments

  • Powerful Batteries That Assemble Themselves

    MIT researchers are developing low-cost manufacturing methods based on the rapid reproduction of viruses. Angela Belcher, a panelist at the Emerging Technology Conference, explains.

    2 comments

  • BMW's Hydrogen Hopes

    Hydrogen may never be feasible as a fuel for vehicles, but BMW is pushing ahead anyway with an advanced hydrogen-gas combustion hybrid.

    23 comments

  • Safer, Longer-Lasting Batteries

    Thin-film technology is still expensive, but it could soon run remote sensors and medical implants–and one day electric vehicles.

    4 comments

  • Better Fuel Cells for Laptops

    Adding a chemical found in antifreeze to fuel cells could provide a longer-lasting alternative to batteries in portable electronics.

    2 comments

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