Biochar technology is showing real potential for helping to mitigate climate change as well as reducing waste and producing energy as a byproduct. But what exactly is biochar and what is it made of? Biochar, or “black gold”, is a lightweight black residue made of carbon and ashes, remaining after heating biomass in a controlled process called pyrolysis. It is rich in pyrogenic carbon and can endure in soil for thousands of years. Although it looks a lot like common charcoal, biochar is produced using a specific process to reduce contamination and safely store carbon. During pyrolysis organic materials, such as wood [...]