Hopefully by now the last crumbs of mince pie will be wiped clean and Grandad has woken up from his Christmas day nap.If you’re anything like us, that period between Christmas and New Year means only one thing – lazing in front of the TV and watching the Royal Institution Christmas Lectures. This institution has been sharing the wonders of science and entertaining children and adults alike for generations, and this year’s host hopes this year will be no different.Our editorial assistant Amy Barret sat down with Hannah Fry, only the fourth mathematician to deliver one of the lectures, who’ll be showing the audience how maths secretly underpins much of the world around us in her lecture series called Secrets and Lies, broadcast on BBC Four on 26-28 December at 20:00.Subscribe to the Science Focus Podcast on these services: Acast, iTunes, Stitcher, RSS, OvercastLet us know what you think of the episode with a review or a comment wherever you listen to your podcasts.Listen to more episodes of the Science Focus Podcast:Aoife McLysaght: What makes me 'me'?Adam Kay: Is Christmas really the most wonderful time of the year on labour ward?Chris Lintott: Can members of the public do real science?Jim Al-Khalili: Why should we care about science and scientists?Robert Elliott Smith: Are algorithms inherently biased?Hannah Fry: What's the deal with algorithms? Hosted on Acast. See acast.com/privacy for more information.