Soil Carbon (IMAGE) Yale University Caption A "measure and remeasure" approach can provide hard evidence of how much carbon is being stored, allowing for better assessments of confidence in carbon markets for croplands, Credit istock Usage Restrictions N/A 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.