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  • The Army's Remote-Controlled Beetle

    A scientist sends a wireless signal from the laptop to the beetle to start and then stop flight. The beetle, seen in the upper part of the frame, is tethered for practical purposes. The insect is attached to a clear plate, so that its flight pattern can be better observed. An oscilloscope shows the electrical signals as they are delivered: a short oscillating pulse triggers the animal to flap its wings, and it continues flapping until a short single pulse tells it to stop.

  • The Adventures of Spirit

    NASA’s mars exploration rover, Spirit, has explored the Red Planet for half a decade, overcoming technical challenges and making significant discoveries.

  • The Life of Opportunity

    NASA’s mars exploration rover, Opportunity, has trekked the surface of the Red Planet for five years. It discovered the first signs of ancient ice and is helping to answer the question: Is there life on Mars?

  • Modeling Malware Over Wi-Fi

    Researchers at Indiana University lead by Alessandro Vespignani have created a mathematical model that shows how people using a Wi-Fi wireless internet connection are targets for infection.

  • Building Safer, Superior Stents

    Researchers at MIT have developed a computer model that simulates the dynamics of blood flowing around a drug-eluting stent. This allows them to evaluate how the drug is released and distributed over time in the arterial wall.

  • The Glucose-Monitoring Tattoo

    Shown here are heart-muscle cells grown in a dish. Sodium rushing into the cells coincides with contraction (as happens during a normal heartbeat) and modulates the sensors’ fluorescence.

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