Former "Good Morning America" host Joan Lunden, got a lot of grief when she decided to try to conceive kids at 54-years-old. When in vitro didn't work, she went with a surrogate mother to have twins Kate and Max. She's written a book about her experience called Growing Up Healthy. [MSNBC] — It's funny how fertilization often produces twins...it's kind of like baby buy-one-get-one-free!