Mysteries of rainforest ecology.

The second episode tackles mysteries of rainforest ecology. The program explores the life history of a giant Brazil nut tree in a Peruvian jungle and the debt it owes to a forgetful rodent; the exploits of a British tarantula expert; bees that pollinate the Brazil nut tree and a rare orchid; the rainfall generated by the rainforest trees themselves; and the life-and-death struggle between a Brazil nut tree and a giant strangler fig tree.