Antibiotics have made a huge contribution to human health by successfully tackling infectious diseases worldwide. But what happens when these drugs are no longer effective? How much do we know about the resistance that bacteria develop, and what new approaches are scientists looking at to tackle this problem?

In this episode, Ruby Ellis, an undergraduate biochemistry student at Magdalen college, speaks to Professor Craig Maclean at the department of Biology, whose research looks at the evolution of antibiotic resistance.