Greg Amberg, Colorado State University (IMAGE) Colorado State University Caption Greg Amberg studies the role of calcium in production of hormones that maintain reproductive health. Credit Photo: John Eisele/Colorado State University Usage Restrictions None 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.