Another flask (IMAGE) University at Buffalo Caption A strain of E. coli that doesn’t endanger human health grows in a flask full of nutrients (the yellow broth). In a study, scientists genetically engineered such E. coli to convert glucose into a class of fatty acids, which the team then transformed into a hydrocarbon called an olefin. Credit Douglas Levere / University at Buffalo Usage Restrictions This image may only be used with news stories discussing the research in the associated press release. Douglas Levere / University at Buffalo 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.