Turn biowaste into biochar, which can last a thousand years, and use it to build soil health and sequester carbon.
Biochar has ancestral roots in the Amazon and Africa, where people have long used charred wood as part of an agricultural practice to create soil called terra preta, or “dark earth.” Burying biochar—essentially charcoal created for purposes other than burning—creates a home for microbes, minerals, and water. In acidic, nutrient-poor, and/or sandy soil, biochar can increase crop yields and reduce fertilizer and irrigation needs. Biochar has important benefits for climate change. It can reduce agricultural greenhouse gases from livestock or soils. Biochar production can avoid emissions from open burning or decay of biowaste from forests or farms. If produced carefully and buried for long periods of time biochar stores more carbon than it creates.