Scientists have found that artificial intelligence is reshaping the way people talk. Researchers at the University of Florida found that adults are increasingly weaving ChatGPT-style vocabulary into ...

Families in the U.S. and around the world are having fewer children as people make profoundly different decisions about their lives. NPR's series Population Shift: How Smaller Families Are Changing ...

A four-week diet change was enough to make some older adults appear biologically younger in a new University of Sydney study.

On a global level, religious groups expand and shrink due to a mix of factors. Demographic factors, such as age structure, fertility and mortality (or life expectancy), tell us whether people in ...