Blake Leeper sprints (IMAGE) University of Colorado at Boulder Caption Blake Leeper tests with Alena Grabowski on the CU Boulder campus in August 2018. Credit Glenn Asakawa/CU Boulder Usage Restrictions Use with credit License Original 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.