Learn why the Great Barrier Reef — one of Earth's greatest natural wonders — is facing serious threats to its survival. Then author J. Maarten Troost introduces us to the remote Pacific island nations of Kiribati and Vanuatu, whose people have lived for centuries on a series of coral atolls and rugged volcanic islands. And we'll get a first-hand report on traditional life in Papua New Guinea.

For more information on Travel with Rick Steves - including episode descriptions, program archives and related details - visit www.ricksteves.com.