In today's news podcast, a study shows a reduced effectiveness of vaccinations in babies who have antibiotics treatments early in life. Also, the world's smallest, light-powered pacemaker, and we learn the secrets of the broadclub cuttlefish's crab-catching colour display. Then, we follow the journey of miso paste up to the ISS and back to Earth again, and hear what it tastes like! Like this podcast? Please help us by supporting the Naked Scientists