Dive back into science news with the Interronauts! Jesse and Sophie are back with a brand new episode, studio, the whole kit and caboodle (kitten cavoodle?). They talk about why it is that the fittest Tassie devils are most likely to succumb to the deadly facial tumours, how to pipe renewable hydrogen, why some shark mammas hook up with multiple pappas, and they speak with Dr Lisa-ann Gershwin about her to-date co-discovery of 204 species of sea animals (including a DOLPHIN!).