Series examining man's survival in extreme environments. A look at life in the rainforest, which requires great skill, ingenuity and sheer bravery.

The rainforest is home to more species of plants and animals than any other habitat on the planet. But for humans, life there is not as easy as it looks. Life in the trees requires great skill, ingenuity and sheer bravery.

The Matis of Brazil carve 4m-long blowpipes to hunt monkeys in near total silence. Deep in the Congo forests, Tete defies death by scaling a giant tree using nothing more than a liana vine and he must then negotiate an angry swarm of bees - all to collect honey for his family.

Three children from Venezuela's Piaroa tribe venture deep into the jungle to hunt tarantulas to toast for lunch. In West Papua the Korowai tribe show off their engineering skills by building a high-rise home 35 metres up in the tree tops.

Most memorable of all, in Brazil we join a unique monitoring flight in search of an uncontacted tribe.