For the first time, the number of babies born to women over 35 exceeds the number being born to teens, reports the Pew Research Center. Of 2008's 4 million births, one in seven were to older mothers, while one in 10 were to teens. The new, slightly older face of the American mom reflects changes in fertility science, a move toward later marriage, and changing attitudes about childbearing, the Washington Post notes.
And the new mom isn't just older, she's also better educated—54% of all new moms, and 71% of the over-35 crowd, have had some college education—and more likely to be unmarried. Some 41% are unwed, up from 28% in 1990. Interestingly, women don't appear to be timing their pregnancies too carefully: About half of the women surveyed said motherhood "just happened," notes the AP. (Click here for a list of celebs who didn't plan on getting pregnant, either.)