Soy FACE (image) University of Illinois at Urbana-Champaign Caption The Soybean Free Air Concentration Enrichment (Soy FACE) facility at Illinois can expose the plants in a soybean field to a variety of atmospheric CO2 and ozone levels -- without isolating the plants from other environmental influences, such as rainfall, sunlight and insects. Credit PHOTO Courtesy of Evan DeLucia. Usage Restrictions Photo may be used only with stories about the research described in the news release. Photo Courtesy of Evan DeLucia. 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.