This episode of the Physics World Weekly podcast features an interview with Richard Dinan, who has made a remarkable career change from reality television star to fusion entrepreneur. Hamish Johnston visited Dinan at his start-up company Pulsar Fusion to find out why he is fascinated with nuclear fusion and chat about his plans to develop a fusion-based thruster for space travel.

Also this week, Margaret Harris talks about a breakthrough in our understanding of why ice is slippery and Matin Durrani explains how the development of fireworks played a key role in the early days of modern science.