Dim light at night and preschoolers (IMAGE) University of Colorado at Boulder Caption A researcher and a study participant play at a light table during a CU Boulder research effort exploring how light impacts melatonin in children. Credit Casey Cass/CU Boulder Usage Restrictions Must credit CU Boulder 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.