710,000 fewer babies were born last year in U.S. compared with two decades ago

File photo showing babies in a U.S. maternity ward. The fertility rate in the U.S. has dropped steadily. Last year, there were roughly 710,000 fewer children born in the U.S. compared with the peak in 2007.

The U.S. fertility rate continued its slide to historic levels, due to plunging teen pregnancies and far more women delaying motherhood into their 30s and 40s.

(Image credit: Seth Wenig)