births and birth rates

Inbreeding may have helped cause Neanderthals to go extinct

Neanderthals went extinct around 40,000 years ago -- about the same time that modern humans migrated out of Africa. This has led researchers to believe that modern humans won the competition for resources, leading to the demise of Neanderthals.

US births decline for fourth year in a row, CDC says

The number of births in the United States declined for a fourth year following an increase in 2014, according to a new report from the U.S. Centers for Disease Control and Prevention's National Center for Health Statistics.

CDC: US fertility rate falls to 'all-time low'

The general fertility rate in the United States continued to decline last year, according to a new report from the US Centers for Disease Control and Prevention's National Center for Health Statistics.