Smart Cards
As potential applications grow, computers in the wallet are making unobtrusive inroads
Volume 275, Issue 2
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Features
The Stellar Dynamo
Sunspot cycles--on other stars--are helping astronomers study the sun's variations and the ways they might affect the earth
Gradients That Organize Embryo Development
A few crucial molecular signals give rise to chemical gradients that organize the developing embryo
Sands of the World
One of the most common elements on the earth's surface, sand is also one of the most various
Probing High-Temperature Superconductivity
Recent experiments exploiting subtle quantum effects yield important clues about why some ceramics conduct electricity without resistance
The Mystery of Lambic Beer
An ancient brewing technique produces a beverage so complex that it is still yielding its secrets to organic chemists
Ring Bubbles of Dolphins
A number of bottlenose dolphins in Hawaii can create shimmering, stable rings and helices of air as part of play