Pressure Cooker (IMAGE) University of Michigan Caption Researchers heat algae in a device that acts like a pressure cooker to turn the algae into a crude bio-oil. Credit Nicole Casal Moore Usage Restrictions None 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.