Emission feedback (IMAGE) Nagoya University Caption As the Arctic warms, dust from snow- and ice-free areas increases. It promotes the formation of ice crystals in clouds, making clouds thinner. Credit Reiko Matsushita Usage Restrictions Credit must be given where image is used 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.