While scientists around the world sweat the steady growth of climate change, Professor Johannes Lehmann, crop and soil sciences, and his researchers have turned up the heat to produce biochar – a fine-grained residue that may simultaneously improve soil health and curb harmful greenhouse gas (GHG) emissions.

Biochar is the organic matter left over after pyrolysis—a slow-burn conducted in the absence of oxygen. This process confines much of the carbon that might otherwise contribute to the formation of carbon dioxide, a prevalent GHG.