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The Rise of Optical Switching

Replacing electronic switches with purely optical ones will become the technological linchpin for networks that transmit trillions of bits each second

By C. Randy Giles, David J. Bishop and Saswato R. Das

The Quintessential Universe

The universe has recently been commandeered by an invisible energy field, which is causing its expansion to accelerate outward

By Jeremiah P. Ostriker and Paul J. Steinhardt

The Mystery of Damascus Blades

Centuries ago craftsmen forged peerless steel blades. But how did they do it? The author and a blacksmith have found the answer

By John D. Verhoeven

The Cultures of Chimpanzees

Humankind's nearest relative is even closer than we thought: chimpanzees display remarkable behaviors that can only be described as social customs passed on from generation to generation

By Andrew Fabian and Christophe Boesch

The Cellular Chamber of Doom

Structures called proteasomes inside cells continuously destroy proteins. Several common diseases result when the process works too zealously--or not at all

By Alfred L. Goldberg, J. Wade Harper and Stephen J. Elledge

Routing Packets with Light

The ultimate all-optical network will require dramatic advances in technologies that use one lightwave to imprint information on another

By Daniel J. Blumenthal

Echoes from the Big Bang

Scientists may soon glimpse the universe's beginnings by studying the subtle ripples made by gravitational waves

By Marc Kamionkowski and Robert R. Caldwell

A Cosmic Cartographer

The Microwave Anisotropy Probe will give cosmologists a much sharper picture of the early universe

By Charles L. Bennett, Gary F. Hinshaw and Lyman Page


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Gifts for Mom

Mother’s Day is Around the Corner