Shingles vaccine and heart disease, and allergy transpoosion

Coming up, groundbreaking research suggests the shingles vaccine can greatly reduce the risk of heart attacks. What's the science behind it? Also ahead: the New Space Race between the US and China goes up a gear as Beijing unexpectedly delays the launch of its Chang'e 7 mission. Plus, the frozen 'poo pills' that scientists hope can help keep allergies at bay. Like this podcast? Please help us by supporting the Naked Scientists (thenakedscientists.com/donate)