Trees near Lake Geneva (IMAGE) American Institute of Physics Caption Plants harness the interaction of light and fluids to make fuel and move water from the roots to the leaves. This photograph of trees near Lake Geneva is overlaid with a diagram showing some of these fluid flows. Credit Psaltis, et al/ APL Photonics Usage Restrictions This image may be used only with appropriate credit. 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.