Bridget Sullivan

If you don't have time to read and dissect the scientific reports by climate scientists around the world, this movie basically tells you what you need to know. The tragically beautiful imagery of creatures in the wild makes you fully appreciate what we have lost and are continuing to lose. I especially like how it gives you a countdown/up of wilderness/CO2 over the course of David's lifetime. Anyone can clearly see that, if we continue at the same rate, we humans have one more of David's lifetime left on this planet. Some people have to see a problem to truly believe it, and this is what this movie does - it SHOWS you what we once had compared to what we have now (e.g. the life-sustaining coral reefs, now a barren wasteland).