Artificial pine needles (image) University of Utah Share Print E-Mail Caption Grant Rea-Downing holds an artificial pine branch. Credit Paul Gabrielsen/University of Utah Usage Restrictions Credit as indicated. Share Print E-Mail 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.