Green light (IMAGE) John Innes Centre Caption A pioneering UK-Japanese collaborative study has used a series of innovative field experiments to show how plants combine circadian clock signals with environmental cues under naturally fluctuating conditions Credit Image Credit – Hiroshi Kudoh Usage Restrictions No restrictions. License Public Domain 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.