New mothers in the U.S. are increasingly older and better educated than they were two decades ago, according to a study on the state of American motherhood by the Pew Research Center, reports Reuters Life! One in seven babies is born to a mother at least 35 years old, compared to one in 11 in 1990. Most mothers of newborns (54 percent) had at least some college education in 2008, up from 41 percent in 1990.