Today’s Solutions: December 19, 2025

A farming technique practiced for centuries in West Africa, which transforms nutrient-poor rainforest soil into fertile farmland, could combat climate change and revolutionize farming across the continent, researchers said on Tuesday. Adding kitchen waste and charcoal to tropical soil can turn it into fertile, black soil which traps carbon and reduces emissions of greenhouse gases into the atmosphere, according to a study carried out by the University of Sussex in England. The soils produced by…

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