Former Cornell PhD student Leilah Krounbi with tomato plants fertilized with biochar made from dairy manure waste (image) University of Saskatchewan Share Print E-Mail Caption Leilah Krounbi, a former Cornell PhD student, used the Canadian Light Source synchrotron at the University of Saskatchewan to test the feasibility of a fertilizer made from human waste. Credit Leilah Krounbi Usage Restrictions Only to be used with appropriate credit and in conjunction with the news release. Share Print E-Mail 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.