Young Tree Plantation, Costa Rica (IMAGE) University of Maryland Baltimore County Caption This is a young reforested area in Costa Rica. It is an example of active reforestation techniques, which have been reported as inferior to natural regeneration processes in several high-profile studies. However, a new study critiques previous research, arguing the studies were biased and that active reforestation can also be effective depending on the goals and the site. Credit Matthew Fagan Usage Restrictions provide credit to Matthew Fagan 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.