Baked Region (IMAGE) Columbia Climate School Caption The summer 2021 western North America heat wave. Redder colors represent higher temperature anomalies; white X’s indicate sites where researchers took tree-ring samples to put it into long-term context. Credit Modified from Heeter et al., Climate and Atmospheric Science, 2023 Usage Restrictions Credit must be given. License Original 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.