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The Alternative Genome

The old axiom "one gene, one protein" no longer holds true. The more complex an organism, the more likely it became that way by extracting multiple protein meanings from individual genes

By Gil Ast

Stopping Spam

What can be done to stanch the flood of junk e-mail messages?

By Joshua Goodman, David Heckerman and Robert Rounthwaite

Shaping the Future

Scientific uncertainty often becomes an excuse to ignore long-term problems, such as climate change. It doesn't have to be so

By Steven W. Popper, Robert J. Lempert and Steven C. Bankes

Probing the Geodynamo

Scientists have long wondered why the polarity of the earth's magnetic field occasionally reverses. Recent studies of our planet's churning interior are offering intriguing clues about how the next reversal may begin

By Gary A. Glatzmaier and Peter Olson

Low-Temperature Superconductivity Is Warming Up

Magnesium diboride defies the once conventional wisdom about what makes a good superconductor. It becomes superconducting near the relatively warm temperature of 40 kelvins--which promises a variety of applications

By Paul C. Canfield and Sergey L. Bud'ko

How Animals Do Business

Humans and other animals share a heritage of economic tendencies--including cooperation, repayment of favors and resentment at being shortchanged

By Frans B. M. de Waal

A Toxin against Pain

For years, scientists have promised a new wave of drugs derived from sea life. A recently approved analgesic that is a synthetic version of a snail toxin has become one of the first marine pharmaceuticals

By Gary Stix


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