Most small amphibious mammals have a diminished sense of smell, a quality that likely arose because of a tradeoff with thermoregulation capacities that allowed them to conserve heat in aquatic environments.

A study identifies five women who have a functioning sense of smell despite an apparent lack of olfactory bulbs—the region of the brain that processes odors.

Carbon dioxide pumped into a bright chamber mimics a breathing host for the pest to target.

The introduced cells engrafted in the nose, became olfactory sensory neurons, and sent axons to the animals’ brains.

Authors of a small study say the two abilities likely evolved in tandem.

Researchers envision a cochlear implant–like device for the nose to give people with impaired olfaction a sense of smell.

Distributed neuronal networks help the brain sort smells.

The whip spider senses the world in weird and wonderful ways.

Responses to compounds in human sweat may help explain why people with autism spectrum disorder tend to struggle with social cues.