The aerial cinematography in this film is terrific to watch, and that is why it rates 5 stars. You will definitely want the blu-ray version, because the detail is astonishing. There are some strange things about the American language script however. First, some poor, yet should-have-been-obvious edits for this audience, for example: 1) Grand Canyon of Arizona, or of the Colorado, not in Colorado, 2) Towns started up more than 6,000 years ago, not 600 years ago. Second, the message often had nothing to do with the images. You notice this right away when we are looking at glacial ice-fields in Iceland, and the narrator is talking about rivers. What was that all about? What does a healthy, swimming whale have to do with the plight of ocean fisheries? It appears that there was a collection of TERRIFIC video, and someone needed a "socially relevant" script to accompany its presentation, but the match was not tight. Third, there is an enormous dichotomy between more than an hour spent in hopeless and dreadful pessimism about the planet, followed by a few minutes of optimism that was kind of unsupported. I mean, if Americans are the worst offenders on the Planet, what does more education and aid to third world countries have to do with the impact of overpopulation and technology? Fourth, core issues like population control and political instability were not addressed at all. I am afraid that valid points like the link between meat consumption and high levels of resource utilization get lost in the message of aid to developed countries, or the lack of a real solution here. After all, if we are all vegetarians consuming 1/10 of the agricultural resources per capita, what happens when there are 10 times as many of us in a few years? What about this urban blight? Can we all go rural, not suburban, but really rural? Aren't we better off when people in third world countries don't drive automobiles? So, I think the messages here do raise a lot of thought, but are short on convincing answers, or convincing video evidence. The "feel good" stuff at the end is just that. My well-to-do neighbors have college educations, and they still eat beef and shrimp from shrimp farms that are destroying mangrove forest,fill their refrigerators with bottled water, and they drive SUVs without remorse! Maybe we need more clear thinking about human nature, not just some comforting blurbs about how good we could be if things were just right! But, such a cinematographic journey this is!