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  • Lithium-Ion Motorcycles

    Better batteries are making electric motorcycles possible, providing a cleaner alternative to pollution-spewing gas-powered bikes.

  • A Musical Score for Disease

    Gil Alterovitz, a research fellow at Harvard Medical School, translated populations of genes into musical notes. Each constellation (green) represents a key network of interrelated genes (blue). Each network is represented by a musical note. In healthy cells, the notes form music in harmony, indicating a healthy state. In cancer cells, the soundtrack veers out of harmony, signaling a transition from a healthy to a diseased state.

  • How to Make UAVs Fully Autonomous

    The sense-and-avoid system uses a four-megapixel camera on a pan tilt to detect obstacles from the ground. It puts red boxes around planes and birds, and blue boxes around movement that it determines is not an obstacle (e.g., dust on the lens). The green box shows the actual position of the Piper Archer II airplane being tracked from two to five miles away. Such a visual system will be useful to UAVs trying to avoid obstacles.

  • Motor Firing

    NASA tests the motors for its launch abort system, which will be part of its next launch vehicle.

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