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David H. Freedman Guest Contributor

  • Layer by Layer

    With 3-D printing, manufacturers can make existing products more efficiently—and create ones that weren’t possible before.

    8 comments

  • Brain Control

    Technology Review visits Ed Boyden, an assistant professor at the Media Lab and leader of the Synthetic Neurobiology Group at MIT, in his lab, where he demonstrates a device to turn neurons on and off and discusses how photosensitive proteins can be used to study and manipulate the workings on the brain.

  • Bomb Buster

    Aimée Rose demonstrates one of the ultrasensitive, handheld explosives detectors that she helped to develop, first as a graduate student at MIT and then as a research scientist at ICx Technologies.

  • Sellout or Savior?

    He’s been accused of betraying the open-source dream, but Ximian cofounder Miguel de Icaza believes corporate partnerships are the best way to realize it.

  • Power on a Chip

    Batteries are heavy and inconvenient. Their successors could be tiny jet engines that provide more than enough power for cell phones and PDAs.

    5 comments

  • The Silicon Guinea Pig

    Can silicon microchips mimic living organisms? Some researchers believe they can provide a fast, cheap way to screen thousands of drugs for toxic side effects.

  • The Virtual Heart

    A global research team is creating a computer model that depicts the heart from a single cell up to the whole organ, heralding new approaches to diagnosing and treating cardiac disease.

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