Richard York, University of Oregon (IMAGE) University of Oregon Caption Richard York, professor of sociology and environmental studies at the University of Oregon, says his modeling of global data from the last 50 years shows that displacing fossil fuel-based energy sources effectively with alternative sources will require a change in human behavior, not just technology. Credit University of Oregon 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.