LEGO Engineered Environments (image) Iowa State University Caption Iowa State's Ludovico Cademartiri and Kara Lind have used LEGO bricks to build engineered environments to study environmental impacts on plants. The colors inside the LEGO structures show various plant nutrients. Credit Photo by Bob Elbert/Iowa State University Usage Restrictions None 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.