BSMS’ Prof Claire Smith, (@An040my), features in the first of the @Ri_Science 2024 #XmasLectures today! Claire will explain what happens to your food when it’s in your stomach, how much you can fit inside your stomach & how vomiting works. 📺Watch on BBC Four and iPlayer.⏰9pm

Carl Sagan sent a message out to the Universe during his 1977 #XmasLectures. Here is how far that message would have travelled at the speed of light since then. Credit: Royal Institution of Great Britain

Once the world's biggest working pencil, this is one of the most iconic #XmasLectures props, created for Philip Morrison's 1968 series. ✏️. Historian Katy Duncan tells us about this piece that's writefully earned its place among some of the coolest things in our archive.

Enjoyed giving a short talk using 3D glasses at the recent @Humanists_UK event of science & comedy at the @GleeClubCardiff #3DspecsChem. Squeezed in mention of my lemon battery world record & @Ri_Science #XmasLectures. Fantastic line-up: @DrJeniMillard @robinjaymorgan.

Need nanobodies? No probllama 🦙. In the 2021 #XmasLectures, molecular biologist Ray Owens explained how studying llamas can help researchers generate 'mini-antibodies' to tackle viruses better than the standard-sized kind. Watch the full series here:

People riding rockets ride this: watch the 1st trial of our 2015 #XmasLectures H-bomb demo. Need your help to make a new podcast about space shuttle. Am calling it #16Sunsets. Click the link & back us if you can 🙏 #Smallerballoonnexttimeplease

Barry Smith (@smithbarryc) showed us some of the ways food companies can "trick" our brains into eating more of their products. Here's something you've heard before in fizzy drinks adverts: see if you can tell the sound of hot water being poured vs cold water.🥤 #XmasLectures

This is an oxidation reaction 🔥. Materials engineer @zoelaughlin shows us a fast (and fiery!) one, but others happen inside our bodies when we eat. 📺 The 2024 #XmasLectures about the science of food are available on BBC iPlayer (UK) and YouTube (rest of the world)

Kick-start your week with #TheOneShow! 💫. 🎶 @chattyman and @AmandaHolden tell all about the @RoyalVariety Performance.📺 @StephenMangan & Nicola Walker on #TheSplit .📚 @DoctorChrisVT talks #XmasLectures at @Ri_Science. We’re live at 7pm! 👉

Hanging out with Monty was just a piece of 'snake' for @DoctorChrisVT 🐍. Shout out to Monty's amazing handler, Mark Amey, for taking part in the #XmasLectures!

📢 The Future of #GenerativeAI. 🕒 7pm 📅6 Dec 📍@Ri_Science 🎫 ❓#FutureOfAI: What doors might open for communication & work?. Find out in the last of the 2023 #TuringLectures, with @Ri_science Christmas Lecturer @WooldridgeMike. #AiForGood #XmasLectures

Phototherapy helps treat jaundice by converting bilirubin into a form that is easier for the body to excrete. 💡. In the 1987 #XmasLectures, David Phillips demonstrated this with the help of a very special 'baby'. Watch the full lecture series:

See what happened when Science+Nature readers got to interview @DoctorChrisVT. 📺 You can catch all the @Ri_Science #ChristmasLectures on the @BBCiPlayer. #XmasLectures

Don't miss the final of the 2024 Christmas Lectures, supported by @CGI_global!. Tonight, @DoctorChrisVT will analyse how our diets have changed through history, and how global food systems affect our health and our planet. Tune in to BBC Four and iPlayer at 9pm! #XmasLectures

A change of venue for today’s #xmaslectures script read through… @Ri_Science

First 2 days of script walkthrough for Royal Institution Christmas Lectures. It’s coming together! @Ri_Science @CompSciOxford @mplsoxford @HertfordCollege @zaraspowell @windfall_films #XmasLectures

Fantastic news that Dr Maggie Aderin-Pocock will be presenting the 2025 @Ri_Science #XmasLectures about outer space & the scientific wonders beyond planet Earth. (Lovely to meet her before this news.). Info cc @theAliceRoberts @sophiescott @DoctorChrisVT

The first of this year's @Ri_Science #ChristmasLectures is on at 9pm tonight. We'll be watching @DoctorChrisVT talk about the science of eating. See what happened when we asked Dr Chris questions sent in by Science+Nature readers. #XmasLectures

Did you catch our film with @DoctorChrisVT talking about the @Ri_Science #XmasLectures on last night’s #TheOneShow? 💥. He’ll be taking the stage this Christmas to reveal the revolutionary science inside our bodies when we eat 🍽️. More on @bbciplayer 👉