Experimenters Aaron and Sylvia visit Nina in her workshop and discover what makes windmills' sails turn in the wind. Next, they visit an old windmill in Amsterdam to find out what happens inside as the sails are turning outside. Finally, they do an experiment that explains how the cogs inside a windmill work and help us do lots of different jobs.

Originally released by BBC, 2015. Streaming video file encoded with permission for digital streaming by Infobase on January 17, 2017.

Meet the Neurons (0:55); --How Do Windmills Work? (2:25); -- Senses Experiment (3:05); -- What Do Windmills do? (3:16); -- How Do Cogs Work? (1:58); -- Summary: How Do Windmills Work? (0:34); -- Credits: Windmills—Nina & the Neurons: Get Building (1:58); .