Cotton fields in Arizona (image) University of Arizona Caption Cotton fields in Parker Valley, Ariz. Credit Photo credit: Timothy Dennehy. Usage Restrictions The photos may only be used in conjunction with a story about the Science Policy Forum discussed in this release. The accompanying credit information must be used with the images. 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.