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Chemistry

Tongue’s sour-sensing cells taste carbonation

A protein splits carbon dioxide to give fizz its unique flavor.

Health & Medicine

Brain speed-reads using just one part

Scientists measure the speed of recognizing, manipulating and producing speech in human brains.

Anthropology

Pygmies’ short stature linked to high death rates

Island-dwelling pygmies provide contested evidence that body size shrinks as mortality rates climb.

Life

Fly pheromones can say yes and no

A new study begins to decode pheromone messages and finds that the same chemicals that attract can also maintain the species barrier.