3 starsThe difference between the African Rift Valley's Gamo people and Americans explored in this doc is the same difference between Avatar's mystical tribespeople and the military. One group believes nature is sacred while the other thinks it should simply be exploited for profit. Guess which group that is. A Thousand Suns may not be an earth-shattering doc, but it's an entertaining one nonetheless. See it with Water First during Epworth United Methodist Church's free double feature on Friday, Feb. 5 (7 p.m.).