James J. Bausch, president of Save the Children, and our entire staff would like to thank you for your recent series of articles about teenagers around the world which concluded with "The Shared and Separate Roads of World Teens," July 2.Our goal for the past 60 years has been to help "at risk" children grow up into healthy, productive adults. Your profiles illustrated the many ways youngsters from diverse cultures overcome tremendous challenges daily - and become success stories in their own right. Thank you for this insightful look into our most precious resource, the future leaders of the world. Wendy Christian, Westport, Conn., Save the Children Letters are welcome. Only a selection can be published, subject to condensation, and none acknowledged. Please address them to "Readers Write," One Norway St., Boston, MA 02115.