Missed the live broadcast? The 2025 @ri_science CHRISTMAS LECTURES® – supported by Viasat – are now available on YouTube! 🌠 #XmasLectures https://t.co/Xru1rS4vq0

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

It’s that time of year again where I’m spray painting random things in the rain on a roof in central London! #ScienceIsEverywhere #BeCurious #DrJoScience #XmasLectures

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.

#XmasLectures @Ri_Science @DoctorChrisVT Gross ALERT- Burp Factory = Fundus of the Stomach

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

From #Earth… to the edge of the Universe. @uniofleicester Chancellor Dame Dr Maggie Aderin-Pocock hosts the 2025 #XmasLectures on BBC Four, exploring one of humanity’s biggest questions: Are we alone? 📺 28–30 Dec | 7pm | BBC Four & iPlayer 🔗 https://t.co/27PAadXQNc

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)

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 🎫 https://t.co/vHchYe1sQB ❓#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: https://t.co/JhDMsiUJop

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: https://t.co/baoq02X803

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

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

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.

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

We're not at liberty to reveal the highly complex, leading-edge technology behind the Foodamatic 3000, but we can tell you Millie played a part in it. #XmasLectures

Did you catch Pembroke’s very own Professor Ana Namburete on the @Ri_Science Christmas Lectures tonight? If not, don’t worry – you can watch the whole #XmasLectures series about artificial intelligence on BBC iPlayer! Ana appears in the second lecture for those interested…