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ComputingWeb worms: Code Red to Warhol
Using an efficient infection strategy, a malicious programmer could deploy a rogue computer program far more voracious than the Code Red worm that struck on July 19.
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EcosystemsWanted: Reef Cleaners
Nearly 18 years after a near total die-off of algae-grazing urchins in the Caribbean, those herbivores are poised for a comeback—which could help save area corals.
By Janet Raloff -
PhysicsAccelerators load some new ammo: Crystals
To make denser accelerator beams that may open new doors in physics, researchers have chilled ions in a miniature test accelerator until the ions coalesced into crystals.
By Peter Weiss -
Materials ScienceChemical sensors gain true portability
Researchers have designed simple new films for indicating the presence of worrisome airborne chemicals.