Catalysts: Our Tiny Chemists

From brewing beer to cleaning up car emissions and even making less polluting fuels. We're asking - what exactly are catalysts, and how do they work? Plus, in the news, scientists discover the mechanism behind the majority of Alzheimer's cases, new technology helps beekeepers keep bees, and we explore the prospects for the survival of humanity with the Astronomer Royal. Like this podcast? Please help us by supporting the Naked Scientists