News
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Health & MedicineHopes raised for Ebola treatment
Most monkeys given dual therapy survive infection with lethal virus.
By Nathan Seppa -
AnimalsLurking males lead to hard-to-fertilize mouse eggs
Mixed-sex society raises resistance to sperm in what may be a long-running arms race between the sexes over fertilization.
By Susan Milius -
PhysicsNew limit placed on physics constant
An analysis of how much the fine structure constant varies with the density of matter may help scientists determine whether the parameter changes with time.
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LifeFlashy drug spotlights infection
Doctors may be able to watch for invading microbes with a fluorescent antibiotic.