Borneo: Sacred Forest

S1, E1: Borneo is the richest rainforest island of all, home to 60,000 species of plants and animals. And, as this remarkable travel documentary narrated by Helena Bonham Carter reveals, more are discovered almost daily. But this 'paradise' is an illusion; the lush forest is effectively growing on a desert, with the soil shallow and poor in nutrients, having been leeched by eons of incessant rain.