As another billion children are added to the world's population every dozen years, what effect does that explosive growth have on the planet? "The People Paradox" raises profound concerns about the welfare of the Earth's most impoverished and vulnerable peoples, who are procreating at a rate far higher than the globe's wealthier regions. A second "Nova" program, "China Revs Up," explores the environmental issues associated with that nation's industrial boom. 120 min. total. Widescreen (Enhanced); Soundtracks: English Dolby Digital stereo, DVS.