Cuban countryside in Batabano, south of the Havana province. Farmers here are producing malangas, pigs, crops of crossed corn, seeds in a very experimental and productive way. In this area the agriculture used to be highly mechanised with high inputs. Following the Special Period, it's now free of those inputs, the monoculture became policulture with diversities of species and varieties. For example, bushes are now used to cover the ground protecting it from erosion. Also, farmers are making use of plants that produce bio matter - humus, but also O2 - they fixate the nitrates and nitrites in the soil form the N2 available in the atmosphere. Therefore, these diversification of technologies help to avoid the greenhouse effect, they protect the soil (like the worm culture, which is a bio-fertiliser). They also create an interesting positive social effect, as neighbours exchange experiences and support each other by sharing improved grains and seeds. This way, the whole of the community is benefited.