I hit up the Sundance Film Festival last month to scope out ten of the most affecting adventure and environmental films, and found flicks that had the rare power to depress and inspire me at the same time. Chasing Ice, a documentary about James Balog’s climate change project, is 75 minutes of stunning cinematography—but it’s also a eulogy for the world’s disappearing glaciers. The Ambassador is an absorbing documentary about journalist Mads Brugger’s gutsy journey into the heart of the blood diamond business—but it’s also a sobering expose on a deeply corrupt industry. Then there’s the provocative yet infuriating Atomic States of America, which examines the history of nuclear energy, and the visually spectacular yet haunting Beasts of the Southern Wild, a fictional account of how climate change might play out in southern Louisiana. We also included a few films that you might not expect, including Detropia—a film about Detroit that speaks to the need to reassess our cities. Check out our coverage for all ten films, some of which will be coming to theaters and cable networks in the next year.