TEEN PREGNANCY AND its consequences constitute one of the largest social problems in the United States today. Each year more than a million teenage girls, an average of more than three thousand a day, become pregnant; of these, 65 to 70 percent are unmarried. By comparison, only about 15 percent of adolescent women who became pregnant in 1960 were unwed. Today, between 7 and 10 percent of pregnant teens have miscarriages that terminate their pregnancies, about 40 to 45 percent terminate their pregnancies by having abortions, and about 50 percent go full term and have their babies. Of those who do give birth, roughly 5 percent give up their babies for adoption. This is a startlingly small figure because in 1955, approximately 95 percent of all unmarried adolescents who carried their babies to term gave them up for adoption. This means 95 percent of today's teenage mothers...