Biochar
How do you can you tackle climate change and increase agricultural yields while decreasing erosion, water use and chemical pollution? The answer is: biochar. Using pyrolysis, agricultural waste is heated in the absence of oxygen and turns to carbon. Husk in Cambodia creates biochar from some of the 150 million tons of rice husks worldwide that are either burnt or left to rot. By ploughing nutrient rich biochar into the soils of smallholder farmers, Husk has increased yields by 40-100% in a single year. And for every ton of biochar that they create, Husk sequesters 1.33 tons of carbon.
— Wayne Visser
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From Purpose Inspired: Reflections on Conscious Living, Volume 3. Buy on Lulu ↗