Jack Sites, Brigham Young University (IMAGE) Brigham Young University Caption Jack Sites, BYU biology professor, is part of the worldwide study documenting local lizard extinctions attributable to climate change. Credit Jaren Wilkey/BYU 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.