this documentary is great for a relatively quick overview of the health of our planet. Perfect for informing my adult class who don't think to watch this kind of thing at home. There are terrific views of Earth as well as harrowing facts of deserts increasing, forests decreasing, animals becoming extinct, and much more depressing data. Its vital that more people know this stuff so they can add their voices to the discussions and debates that I hope will come to be in every community and culture until a majority of the world's population will realise that the world is balancing on the brink of non-viability. Something huge and worldwide needs to be done to save our planet.