Tanzania: Thorn Tree Country

Venture beyond the dense green curtain into a pristine rain forest that thrives in splendid isolation on a Panamanian island, sustained by the complex partnership of plant and animal. Climb a colossal tree, from shadowy forest floor to leafy canopy, marvel at the exotic species that live and feed, breed and die here, and ponder the interactions among them both predatory and peaceful that continually enrich the forest's vitality. National Geographic reveals tantalizing clues to the secrets of the rain forest and unforgettable glimpses of the natural harmony and magnificence that distinguishes it as one of the world's last great places.

• documentary
• nonfiction