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Shifty Talk: Probing the process of word evolution
Words change more quickly over the millennia the less frequently they are used, a quantitative result that may aid in reconstructing old languages and predicting future changes.
By Bruce Bower -
AnimalsEat a Killer: Snake dines safely with strategic delays
An Australian snake kills dangerous frogs then waits for their defensive chemicals to degrade before eating them.
By Susan Milius -
PhysicsLight does some weird math
Adding a photon to a light pulse then taking one out gives a different result from doing the same operations the other way around.
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Health & MedicineAntibiotic improves recovery from stroke
An antibiotic called minocycline seems to limit brain damage and disability in stroke patients.