African technique transforms soil fertility

700-year-old West African soil technique could help mitigate climate change

 A 700-year-old fertile soil technique could mitigate climate change and revolutionize farming across Africa, say researchers. They discovered that the ancient West African method of adding charcoal and kitchen waste to highly weathered, nutrient poor tropical soils can transform the land into enduringly fertile, carbon-rich black soils which the researchers dub 'African Dark Earths'.