In this episode, we hear about self-esteem, a new genus of extinct horse, the future of biological engineering, mosquito trackers, and sperm competition in salmon.

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.

Hear about the sea urchin immune system, symbiotic bacteria in squid, anxiety and a training course to promote collaboration between scientists.

In this episode we hear about deep-sea bacteria, cigarette smoke and lung disease, antibiotic resistance, unconscious perception, and the benefits of sleep.

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 tinnitus and hyperacusis, salamanders, chemical harpoons, and the role of ultrasound and song in the mating rituals of mice and flies.

In this episode we hear about the mating habits of flies, radiation resistance in bacteria, how insects learned to smell, and the Hawaiian bobtail squid.