In this week's episode of the Science Focus Podcast, we're joined by AIDS researcher Professor Steffanie Strathdee.

In 2015, Strathdee's husband was infected by superbug that was resistant to every antibiotic that the doctors could throw at it, but she was able to save his life with an experimental treatment made of viruses found in sewage.

In the New Year issue of BBC Science Focus Magazine, we cover the biggest ideas that you need to understand in 2021. This episode is one of a series in which we talk to the experts who will explain these ideas in their own words.

Let us know what you think of the episode with a review or a comment wherever you listen to your podcasts.

Subscribe to the Science Focus Podcast on these services: Acast, iTunes, Stitcher, RSS, Overcast

Listen to more episodes of the Science Focus Podcast:

Marcus Chown: Does the Big Bang really explain our Universe?

Sonia Contera: How will nanotechnology revolutionise medicine?

Professor Catharina Svanborg: Is the cure for cancer hiding in human breast milk?

Brian Switek: How did bones evolve?

Bill Bryson: What should we know about how our bodies work?

Dr Monty Lyman: What does our skin tell us about ourselves?

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