I'm biased in reviewing this, as I had the huge honour of working with Sir David Attenborough on parts of the second film that is contained in this DVD. But, from a climate change scientist's point of view, I think the BBC really have excelled themselves here. The content is well-balanced and fast-moving, the facts are well laid out and reflect the consensus of the scientific community. All this is against the incredible back drop of Sir David's myriad programmes from the last few decades, programmes that have brought the wonders of the natural world into the living rooms of millions. With him as our expert guide we have seen so many animals, plants and ecosystems to which previous generations were oblivious. Now he shows us how many of these species and habitiats are at risk, how millions of humans are also threatened, and the ways in which the most extreme impacts of human-induced climate change can be avoided. It's not about beautiful footage (though there is plenty), it's not about a relaxed couple hours letting David's soothing tones wash over you (though he is on top form), instead this is a documentary that puts all those of the superb 'Life' series into fragile perspective.