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  • Roke develops first tiny self-charging tracking device, life jacket

    Roke's Agitate Life Jacket. Tracking device embedded for those lost. (via Roke) The prospect of becoming lost while at sea, in the mountains or anywhere for that matter can quickly become a reality as things can and do go wrong when least expected. Trying…

  • Energy-harvesting shock absorber increases fuel efficiency

    Energy harvesting shock absorber with mechanical motion rectifier concept (via Lei Zuo) Potholes and bumps in the road usually decrease the life of our vehicles shock absorbers over time, so we tend not to think of horrible road conditions as beneficial…

  • Engine uses sound waves for fuel

    A startup company has developed a new type of engine that could generate electricity with the efficiency of a fuel cell, but costs as much as an internal combustion engine. Etalim, based in Vancouver, Canada, says its engine, roughly the size of a basketball…