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Wading in Waste

Thanks to unchecked development along America's coasts, disease-causing microbes are increasingly fouling beaches and shellfish beds

By Michael A. Mallin

Toward Better Pain Control

Advances in understanding the cells and molecules that transmit pain signals are providing new targets for drugs that could relieve various kinds of pain--including those poorly controlled by existing therapies

By Allan I. Basbaum and David Julius

The Science behind Sudoku

Solving a Sudoku puzzle requires no math, not even arithmetic. Even so, the game poses a number of intriguing mathematical problems

By Jean-Paul Delahaye

Dependable Software by Design

Computers fly our airliners and run most of the world's banking, communications, retail and manufacturing systems. Now powerful analysis tools will at last help software engineers ensure the reliability of their designs

By Daniel Jackson

A New Assault on HIV

The constant search for weak points in the virus yields ideas for a wholly new class of drug

By Gary Stix

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