Tropical Forest Canopy, Panama (1 of 2) (IMAGE) Smithsonian Tropical Research Institute Caption Smithsonian scientists and colleagues working in Panama discovered that small leaf samples from a single tree were home to more than 400 different kinds of bacteria. Credit Beth King, 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.