Sarah Knutie, University of South Florida (IMAGE) University of South Florida Caption This is lead author Sarah Knutie, a postdoctoral researcher at the University of South Florida in Tampa. Credit Laura Domine Usage Restrictions Please credit the University of South Florida 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.