Brian Cox and Robin Ince find out about the secret world of fungi, hidden beneath our feet. They are joined by biologist Merlin Sheldrake and mycologist Katie Field. They hear about the hidden life of fungi, including their hundreds of mating types, predatory behaviour and crucial role in life beginning on Earth. Katie shares how mycologists like her are using fungi to come up with creative solutions to climate change.

New episodes are released on Saturdays. If you're in the UK, listen to the full series first on BBC Sounds: bbc.in/3K3JzyF

Producer: Caroline Steel
Executive Producer: Alexandra Feachem