Bob Walker, Michigan State University (IMAGE) Michigan State University Caption Bob Walker, Michigan State University geographer, and colleagues are conducting the first research expedition of the westernmost leg of the Transamazon Highway deep in the heart of the Brazilian Amazon. Credit Michigan State University Usage Restrictions None 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.