Biochar (IMAGE) American Society of Agronomy Caption Biochar confines in situ grazed pasture nitrous oxide emissions. Credit Arezoo Taghizadeh-Toosi Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.