April 29, 1996

KNOXVILLE, Tenn. — A new University of Tennessee study could tell scientists more about how rain forests grow back after being cleared by humans. Dr. Sally P. Horn, a UT-Knoxville geography professor, is co-directing the study in Costa Rica to see how forest disturbance caused by ancient civilizations affects present-day rain forests. Horn said humans

KNOXVILLE, Tenn. — Cities and states can fight air pollution more effectively using a new University of Tennessee method of estimating automobile emissions. Dr. Arun Chatterjee, UT-Knoxville civil and environmental engineering professor, said the UT model more accurately estimates automobile emissions by more closely factoring engine starting and running temperatures into the formula. Cities and