Secrets of Our Living Planet showcases the incredible ecosystems that make life on Earth possible. Using beautifully shot scenes from all over the world, Chris reveals the hidden wonder of the creatures that we share the planet with and the intricate, clever and bizarre connections between the species, without which life just could not survive.

Discover previously unknown relationships, like why a tiger needs a crab or why a gecko needs a giraffe. Each week Chris visits one of our planet's most vital and spectacular habitats and dissects it to reveal the secrets of how our living planet works.

In this episode, Chris weaves a spellbinding account of how the very special conditions that exist in the rainforest have allowed vast colourful communities of animals and plants to evolve. And he reveals one particularly extraordinary web of life centred on a tree - the Brazil nut tree. It is one of the mightiest trees in the Amazon but it can only survive thanks to a little rodent called agouti, an orchid and a very unusual bee. Show less