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Royal Institution

@rigb.org

Happy 100th birthday to national treasure, Sir David Attenborough! 🎂 To mark this fantastic milestone birthday, we rounded up all the animals he brought to his 1973 Christmas Lectures to create a Countdown-style maths challenge you can also play from home.

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The countdown begins 🚀 Set your reminders for the 2025 Christmas Lectures, supported by CGI: 28, 29 and 30 December at 7.00pm on BBC Four and iPlayer. Space scientist Maggie Aderin-Pocock will take us on a whistle-stop tour of the Universe searching for evidence of extra-terrestrial life.

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10 years ago, Tim Peake joined the Christmas Lectures via video link from the International Space Station. Today, he takes centre stage in our Theatre, right here on Earth! 🌍 Tune in at 7.00pm on BBC Four and iPlayer for the grand finale of the 2025 Christmas Lectures, supported by CGI!

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Sir David Attenborough's 1973 Christmas Lectures broke the cardinal rule of broadcast television: "never work with animals or children"—and because of that, they gave us some truly magical moments, like this interaction with a ring-tailed lemur.

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