Nina looks at different household inventions and finds out how they work. With the help of her trusty neurons she examines the items to answer children's questions. How does a kettle work? This is the very question that Rebecca, Megan and Zobia ask Nina in this episode of Nina and the Neurons Go Inventing. In this bubbling episode, beautiful Belle, the sound neuron, helps Nina as they take a good look inside a kettle. They then leave the workshop to see something with very big chimneys that uses the same science. This episode is all about thermostats and we finish off by making a thermostat of our very own!