A huge and startling set of extremely gorgeous things concentrating within the gigantic expanse of land that is deemed to be Asia. There's an interesting narrative turn here away from broad environmental fretting to focussing on individual success stories which feels like a choice but it still has the dark tangents usually present in BBC studio nature documentaries which prevents it from feeling like a piece of careful marketing. The stirringly bizarre visages of the Tibetan fox and the purple frog is always a welcome sight, and some of the big cat footage here, especially in the singular landscape of Iraqi Kurdistan is jaw-dropping.