In this episode we hear about parasitic worms, dog tumours, epilepsy, DNA sequencing classes and social behaviour in mice.

In this episode, we hear about why we always have space for dessert, how collecting seeds from large areas could help restoration projects, gut bacteria, the placebo effect and toxoplasmosis.

In this episode we hear about cancer, dengue fever, sperm DNA and neurons that are sensitive to magnetic fields.

In this episode we hear about how chimpanzees use conceptual metaphors, hyperactive sperm, the use of bacteria to estimate the time of death, stem cells and smoking, and a new type of bacteria.

In this episode we hear about ancient proteins, aging mice, mosquito nets, resourceful plants and cocktail party conversations.