Meat substitutes (IMAGE) University of Bonn Caption Meat substitutes are on the rise. Researchers at the University of Bonn have now investigated why they are consumed. Credit © Gregor Hübl/ University of Bonn Usage Restrictions Please use this image only in connection to the press release. 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.