Forests (IMAGE) DOE/Pacific Northwest National Laboratory Caption Forests are becoming shorter and younger because of a range of factors, a new study says. Credit Ed van duijn, Unsplash Usage Restrictions Please use credit info. 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.