Surgery has a climate change problem (IMAGE) Michigan Medicine - University of Michigan Caption The operating room produces 70% of hospitals' greenhouse gas emissions, but two surgeons-in-training have come up with solutions to reduce that number. Credit Jacob Dwyer/Michigan Medicine Usage Restrictions None 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.