Pyrolysis is a thermochemical process in which an organic material is heated in the absence of oxygen. During this process, the material thermally decomposes at elevated temperatures, producing a number of products, including gases, liquids and solid carbon residues. The digestate can also be subjected to a pyrolysis process, thus becoming biochar.  Biochar can be incorporated into soil to improve the soil structure, fertility and, as a stable material, it can contribute to long-term carbon capture and storage. Let's talk about biochar with Marc M. Feldmann, Co-Funder & CEO of Carbon Farming.