Circle the equator for a look at the diverse species that dwell in tropical forests, such as sloths, lemurs and elephants, and uncover the region's dark side.

As the seasons wax and wane, a look at how trees and animals help one another survive. Witnessing spring fireflies dancing after dark, summer fungi that cool off overheated trees, and autumn migrations.

Wading into wetlands, where trees and water meet to nurture new life. Diving into an underwater forest that protects young fur seals, visiting a mangrove sanctuary where a curious band of aquatic misfits hides out, and more.

Climbing into a realm of thin air and towering rock as mythical monkeys battle for a winter food stash, lemurs fill a fruit-filled tree canopy, and aromatic trees bring together blossom and possum in a moonlit tryst.

Travelling to the Arctic for a peek at the brutal challenges of life in the boreal forest, then admiring some stellar animal adaptations. Witnessing a secret reindeer superpower, navigating a rodent labyrinth of snow, and learning about moose.

How plants and animals tough it out in some of the driest terrain Earth has to offer. Running across thirsty trees that act as elephant signposts, seeing insects team up with plants for a chance at life, and insight into natural chemical warfare.