With scientists still racing to find treatments for Covid-19, Nicola Davis speaks with Prof Pall Thordarson about why soap is so effective at deactivating Sars-CoV-2 and how this differs from hand sanitiser.. Help support our independent journalism at theguardian.com/sciencepod

The Guardian's Science Weekly

Covid-19: why is hand washing so effective?

The award winning Science Weekly is the best place to learn about the big discoveries and debates in biology, chemistry, physics, and sometimes even maths. From the Guardian science desk  Ian Sample, Hannah Devlin &  Nicola Davis meet the great thinkers and doers in science and technology. Science has never sounded so good! We'd love to hear what you think, so get in touch via @guardianaudio or podcasts@theguardian.com

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The Guardian's Science Weekly