Farmers are turning agricultural waste into biochar, a carbon-rich material that enhances soil health and boosts crop yields. Traditional practices of burning or composting waste contribute to carbon emissions, but biochar captures carbon and improves soil fertility. The PyroTower, a solar-powered furnace developed by PlantVillage+, allows communities in developing regions to produce biochar efficiently. This technology can generate significant amounts of biochar while being cost-effective and easy to transport. The cooperative model of PlantVillage+ ensures that local farmers benefit economically, with 95% of revenue going to workers. Biochar not only sequesters carbon but also improves water retention in soils, making it particularly beneficial for tropical and sandy soils. As a negative-emissions technology, biochar presents a viable solution to mitigate climate change while enhancing agricultural productivity.