Why are we sad when television series end?

The end of Australian soap opera Neighbours has us wondering why a television series ending makes us sad. Also, what does science say about how to engage with screens while still protecting your vision?

Also on the show, visual ecologist Daniel Hanley has created a camera to help us visualize the world animals see, and why are there green birds, green insects, but no green mammals?

All that plus more Unexpected Elements.

Presenter: Marnie Chesterton Producers: Margaret Sessa-Hawkins, Alice Lipscombe-Southwell, and Ella Hubber