Labeled side view (IMAGE) Cell Press Caption This image shows a labeled photo of a of a transparent hydrogel-aerogel cooling bilayer, indicating scale and two layers Credit Zhengmao Lu and Ningxin Chen Usage Restrictions Credit required 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.