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AnimalsThe secret appetite of cleaner wrasses
The little reef fish that nibble parasites off bigger fish that stop by for service actually prefer to nibble the customers.
By Susan Milius -
Health & MedicineAnthrax toxin curbs immune cells
A toxin produced by the anthrax bacterium suppresses cells that launch the body's immune response.
By John Travis -
PhysicsAntiglare eye black is better than tape
Black grease that athletes smear under their eyes to control the glare of the sun really helps them discern contrast; what's more, it works better than black tape, a newer antiglare aid.
By Nathan Seppa -
Old Worms, New Aging Genes
The genes and hormonal signals that regulate life span in worms may do the same in people.