Jonathan Pruitt, University of Pittsburgh (IMAGE) University of Vermont Caption This is Jonathan Pruitt, a University of Pittsburgh biologist, is the lead author on a new study in the journal Nature exploring group selection in evolution. Credit courtesy Jonathan Pruitt Usage Restrictions with associated story 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.