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AstronomyNo signal from Mars Polar Lander
A radio signal that NASA hoped came from the vanished Mars Polar Lander has a terrestrial origin, scientists from the space agency and Stanford University have concluded.
By Ron Cowen -
Is that salamander virus flying?
Scientists searching for the carrier of the iridovirus causing a salamander disease have dismissed frogs and fish, but not birds.
By Susan Milius -
ChemistryRooting for new antimicrobial drugs
A compound from a tree found throughout tropical Africa could prove useful as a topical antifungal medication.
By Corinna Wu -
PhysicsElectron spins pass imposing frontier
Electron spins crossed from one semiconductor to another with apparent ease and little or no mussing of their direction, suggesting that sandwiches of materials common in microcircuits are no obstacle to creating spin-information channels in future circuits.