Casting Seeds Into the Air (IMAGE) Smithsonian Tropical Research Institute Caption S. Joseph Wright, staff scientist at the Smithsonian Tropical Research Institute, disperses seeds above the tropical forest canopy on Panama's Barro Colorado Island. Credit Marcos Guerra, STRI Usage Restrictions credit: STRI 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.