Nina and the Neurons: Go Engineering

Series 1 Episode 11: Tunnels

Nina investigates how tunnels are made - with the help of Luke, her sight neuron. Engineers Connor, Emily and Ferdia visit Nina in her workshop and discover that tunnels let people go underground or through mountains. Tunnels have to hold up a lot of weight from above and the best shape at doing this is a circle, so tunnels are normally circular.

Category: Children / Science
Original air date: 28/01/2013