Cassandra Pybus exposes the secret trade of the skeletal remains of the first people of Tasmania. CW: This episode contains upsetting discussion about grave desecration and the trading of human remains

Fungi have given us many gifts, from penicillin to food, but they can also be quite scary. Dr Alison Pouliot spends her time trying to explain these strange alien-like things, which do their most interesting work underground (R)