A teddy bear launched into the upper atmosphere as part of a school science project has gone missing! Inspired by this story, the Unexpected Elements team look into how bears could help improve astronauts’ health on long-term space flights. Next, how has a US Air Force site delivered an unexpected conservation win for an endangered species?

We’re then joined by Justin Gregg, a professor of animal behaviour and cognition. He reveals why we anthropomorphise cuddly toys – such as teddy bears – and why this isn’t necessarily a bad thing.

We meet Alan Turing’s teddy bear, before finding out why it’s good to get lost.

All that, plus many more Unexpected Elements.

Presenter: Marnie Chesterton, with Andrada Fiscutean and Chhavi Sachdev