In the wake of yet another new record for becoming the world's oldest mother, fertility experts are encouraged by recent research showing that older moms are as capable of good parenting as younger women -- but are increasingly concerned about women naively postponing pregnancy till later in life. "Thanks to technology and today's 40- and 50-year-olds often being healthier than in the past, it is more possible than ever to facilitate their desires for pregnancy," said Dr. Nancy Teaff of Reproductive Endocrinology Associates of Charlotte, a specialist in in-vitro fertilization (IVF). "But no one should take that as reason enough to put off giving birth past the normal reproductive years." Women's focus on career development -- combined with rapid advances in fertility medicine --...