Is it possible to feed an ever-growing population while consuming less fossil energy and causing less pollution? The author suggests to the actors in the agricultural production sector to carefully observe nature, which has long known how to "produce" sustainably. His reasoning is starting to resonate with many producers because it is based on recognized scientific expertise, a sensitivity to nature, and a constant humanistic concern. Here is what the book discusses: the farmer, nature's best enemy? restoring and implementing the natural fertility of soils agricultural practices: major unavoidable paths producing wheat with fewer inputs the basics of natural breeding green oil? subsistence agriculture? feeding the planet today and tomorrow.