Matchstick forest (image) American Society of Agronomy Share Print E-Mail Caption Wind-felled trees such as these in 1999 become a fire hazard. Controlled burns minimize the risk. Credit Superior National Forest Usage Restrictions Please use with story only. 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.