Frank and John Craighead were National Geographic grantees and National Geographic magazine writers. Frank passed away in 2001 at 85, and his twin brother John passed away September 18th at 100 years old. Learn more about the Craigheads here. By Mark Jenkins for the National Geographic Timeline When, a few years ago, Audubon magazine included among its “100 Champions of Conservation” Frank and John Craighead, it … Continue reading The Craigheads: Conservation, Controversy, and a Classic Nat Geo Story