Expanding Tropical Forest Spells Disaster for Conservation (3 of 3) (image) North Carolina State University Share Print E-Mail Caption Fire helps keep savannas healthy. Credit Photo courtesy of William Hoffmann, NC State University. Usage Restrictions None 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.