From Guyana to Peru, agricultural techniques dating from the pre-Columbian era are being brought up to date. These skills, forgotten or unfairly criticized, are a reminder of the incredible ability of Native American populations to adapt.
In Guyana, the abandonment of this practice coincides with the settling of Amerindians. In Peru, the addition of charcoal makes it possible to retain mineral salts in the soil that are usually washed away by rain. These two techniques, along with slash and burn, allowed the development of agriculture.