Biosolids (IMAGE) American Society of Agronomy Caption Basta and Dawn Busalacchi showcase a mound of biosolids -- a nutrient-rich growing medium recycled from sewage. Credit Photo provided by Nick Basta. Usage Restrictions Please use with story only. 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.