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Prolonged responses to odors, called afterimages, may originate in the brain, rather than in the nose.

Ensembles of as few as 25 mushroom body neurons allow Drosophila to distinguish and react to specific odors. 

In discrete neuron networks linking odor receptors in the nose to higher brain areas, similar odors are parsed by deep-lying cells with narrow odor selectivity.

Avoiding the transmission of mitochondrial disease takes a trio, but raises a host of logistical issues.

While genomic data sharing is essential for research, scientists must work to keep sensitive, potentially damaging information under wraps.

Hypersaline, anoxic basins on the Mediterranean seafloor harbor pockets of unique and diverse life.

A genetic analysis that tracks the evolution of pathogens helped incriminate a Spanish anesthetist who infected hundreds of patients with hepatitis C.

A new tick-borne disease has emerged in the US Midwest—and the culprit is not a bacterium. 

Could the fungus-gardening activities of leafcutter ants teach humans how to produce sustainable biofuels?

An issue devoted to the latest research on how smells lead to actions

Animal robots have become a unique tool for studying the behavior of their flesh-and-blood counterparts.

Long known to play a role in sexual attraction, pheromones are revealing their influence over a range of nonsexual behaviors as researchers tease apart the neural circuitry that translates smells into action.