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An African firm turns to open-source programming.
Robots that can climb stairs, crawl over ditches, survive three-story falls–and pester people who ignore your e-mails.
PARC’s Mark Yim shows off his robots, which reassemble themselves to slink like snakes, roll like wheels or scamper like lizards.
A glove and mechanical assembly let you feel the unreal.
From the archives: An MIT expert on national security technology tells us why the current missile defense project won’t ever be able to do its job–and offers a better alternative (from the April, 2002 issue).
“Deny-use” technology could prevent terrorism and jump-start the economy.
New tools have computers seeing things.
Software screens digital images for secret messages.
Silicon is cheap; “compound semiconductors” are fast. Combining the two could yield cheaper cell phones and DVD players.