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.
Software: Simulation tools fight new network parasites.
MIT researchers design robots to automate tiny tasks.
Microcapsules that keep you comfy.
The start of a worldwide obsession: white dots on a TV screen.