BBC Unexpected Elements: Why are we sad when television series end?

Leonie joins the Unexpected Elements team to mark the passing of a television institution, the end of the Australian soap opera Neighbours. Why, the presenters wondered, would a television series ending leave people sad.

Also: what does science say about how to engage with screens while still protecting our vision, now did visual ecologist Daniel Hanley create a camera to help people visualise the world that animals see, and why do have have green insects and green birds, but no green mammals?

Listen here.