As humans age, particularly after middle age, their brain functions, cognitive abilities and memory can deteriorate to varying degrees. Aging-related disorders marked by cognitive decline, ...

Cellular differentiation of stem cells into specialized cells requires many steps, including division, to create more cells; fate determination, which is a commitment to a specific lineage or ...

On the avenue today before The Metropolitan Museum of Art, it is frosty, with a selection of clothing that reflects the weather—pedestrians are hastening by with scarves and tweed coats drawn to their ...

People are estimated to be able to discriminate between anywhere from 10,000 to more than one trillion different smells. In the early 1990s, our understanding of how that can be possible took a big ...

The increase of brain size is intimately linked to the evolution of humanity. Two different human species, Neanderthals and modern humans, have independently evolved brains of roughly the same size ...

Exposure to ultrafine particles from traffic alters the expression of many genes in human olfactory mucosa cells, a new study shows. The study is the first to combine an analysis of emissions from ...

Researchers have identified the function of olfactory receptors in the human heart muscle, such as are also present in the nose. One of the receptors reacts to fatty acids that occur in the blood, in ...