Roses in a Climate Chamber (IMAGE) Aarhus University Caption Habtamu Giday used roses to investigate the physiology behind stomatal functioning. Credit Janne Hansen, Aarhus University, Denmark 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.