Integral reefer containers (IMAGE) Helmholtz-Zentrum Dresden-Rossendorf Caption The growing demand for cooling technologies is accompanied by steadily increasing energy requirements. In addition, conventional cooling systems rely on refrigerants with a very high global warming potential. The image shows integral reefer containers stacked on a container ship. Credit Wikimedia commons, Licence: CC0 1.0 https://commons.wikimedia.org/wiki/Category:MSC_Branka_(ship,_2016)#/media/File:MSC_Branka_in_Bremerhaven_1.jpg Usage Restrictions in accordance with Wikimedia commons, Licence: CC0 1.0 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.