Elizabeth and Margie hit the links at the Science Museum of Minnesota to explore how rivers change the shape of the landscape. Victoria and Alejandra investigate why some plants thrive and others cannot withstand the elements on the Guadalupe-Nipomo Sand Dunes and tree-climbing scientist, Nalini Nadkarni, explores the survival of forest canopies.

Originally released by Big Media Holdings LLC, 2013. Streaming video file encoded with permission for digital streaming by Infobase on February 10, 2017.

Rolling River (3:52); --Rolling River: Direction (5:43); -- Scientist: Forest Ecologist (2:43); -- Dunes (6:05); -- Bus Emissions Riddle Answer (1:12); -- Credits: Earth Systems (0:41); .