Clark Norton has been chronicling the baby boom generation since he was backpacking in Europe in the early 1970s. In the 1980s and '90s, as his children were growing up, he wrote about family travel. And once his children fled the nest, he's been writing about adventurous travel for people in their 50s, 60s, and now, early 70s as well. His work has appeared in dozens of leading national and regional publications as well as top websites, and he is the author of 17 guidebooks, to such disparate places as California, Alaska, the Dominican Republic, and, most recently, Tucson, Arizona, where he now lives with his wife, Catharine, and two cats. Though he has traveled to some 120 countries to date, his life list keeps growing every year.