Many endangered species of the islands face the fate of extinction if not for the efforts of the world's leading naturalists fighting to keep their habitat unscathed.

A visit to the remote Greek island of Ikaria where inhabitants live longer than most Americans and try to maintain their centuries old way of life in a modern world.

Weir visits the Taj Mahal in India and learns about conservation efforts to save the Bengal tiger.

The Wonder List visits Jordan and Israel to examine the Dead Sea's decline, and meets the people battling to save it.

A journey through the canals of Venice, where rising sea levels threaten the future of the historic city.

A visit to the Alps where glaciers are receding to examine what the stakes are if the melting continues.

A visit to Florida's endangered Everglades.