The U.S. teen birth rate is at a record low, dropping below 18 births per 1,000 girls and women ages 15 to 19 in 2018. What’s behind the recent trends?
Research over hundreds of years has consistently found that boys naturally outnumber girls at birth. The speculation is that this is nature’s way of countering the relatively high mortality rates of males, and creating more of a gender balance in the population. While historically, there have been about 105 boys born for every 100 girls […]