The conceit at the heart of Think Global, Act Rural, a French documentary by Coline Serreau, is that modern farming methods are actively harming the land and failing to provide the most effective production of food. It espouses the virtues of traditional farming techniques, of not using ploughs, of focussing on soil, rather than plant quality and of using natural fertilizers and pesticides. It initially weaves a web of conspiracy theory whereby the companies that invented farming chemicals perpetrate their use for material gain, rather than biological effectiveness and are then protected by the politician. Then the film starts to provide both evidence and micro-biology level facts.
In French with English subtitles.