'Last Lands' travels to former Panama island prison that became national park

Correspondent Bob Woodruff travels to endangered territories in the docuseries. ABC News Live's original docuseries "Last ...

How a shape-changing island in the Amazon became the center of a decades-long border dispute

In the heart of the Amazon Basin, where the borders and cultures of Peru, Colombia and Brazil converge, a tiny, shape-shifting island has become the unlikely setting for a diplomatic tug of war.