Woods Restored (IMAGE) University of Wisconsin-Madison Caption Volunteer restoration efforts, focused on removing invasive trees and shrubs and introducing controlled fires, have helped return this Wisconsin oak woods closer to its conditions before human settlement. Credit David J Tenenbaum, University of Wisconsin-Madison 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.