Thomas Hertel, Purdue University (IMAGE) Purdue University Caption Integrating global markets can buffer food prices and availability from adverse impacts of climate change, says Purdue agricultural economist Thomas Hertel. Credit Purdue University/Tom Campbell Usage Restrictions Credit Purdue University/Tom Campbell 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.