News
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AnimalsWest Nile virus hits bird populations
West Nile virus has hammered populations of five common North American birds.
By Susan Milius -
Planetary ScienceEris dwarfs Pluto
Ex-planet Pluto suffers another demotion, as observations show that it's much less massive than Eris, another distant denizen of the outer solar system.
By Ron Cowen -
TechA computer in every cell
Artificial genes inserted into cells make RNA molecules that can perform logical computations.
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AnimalsProfiles in Courtship: Flirting male fish show their best sides
Courting male guppies that sport a tad more orange on one side of their bodies than on the other tend to flash that brighter side at females.