Nina investigates why rivers are wiggly with the help of Belle, Felix and her touch Neuron.

Originally released by BBC, 2013. Streaming video file encoded with permission for digital streaming by Infobase on November 17, 2016.

Meet the Neurons (0:56); --Why Are Rivers Wiggly? (2:15); -- Senses Experiment (4:20); -- Slow and Fast River Flow (2:45); -- Changing River Shapes (1:30); -- Summary: Why Are Rivers Wiggly? (0:41); -- Credits: Rivers—Nina & the Neurons: Earth Explorers (1:32); .