Facial recognition tech, and Russia destroys launchpad

Coming up, we explore the UK's plans to rollout facial recognition technology. Is it a bold move to catch violent criminals, or scientific and ethical overreach? Also, why volcanic eruptions may have aided the spread of the second wave of the Black Death in Europe, what caused damage to Russia's space launchpad in Kazakhstan, and whether bacteria can help us build habitats on Mars. Like this podcast? Please help us by supporting the Naked Scientists