How do lights light up?

As the sun sets and the sky gets dark, something else starts to happen… The lights come on! There are lots of different kinds of lights but what’s happening inside an LED light bulb? Nij and the kids meet physicist Professor Chennupati Jagadish to shine a light on this tricky question…

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Episode One: Why are jokes funny?

This is an Episodic show. You can listen to it in any order, but episode one is always a great place to start.

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