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SCIENCE

Juan Pujol Garcia and Thirtynineitude: Citation Needed 8×03

Tom Scott | March 21, 2026

Our traditional Wartime Badass Episode this week, albeit a wartime badass whose weapon included expense reports. BONUS MATERIAL: https://www.youtube.com/watch?v=tFFoDDhl9DA FULL PLAYLIST: https://www.youtube.com/playlist?list=PL96C35uN7xGIo2odDuuPeYtb7BtQ1kBhp WEB SITE and MORE AUDIO EPISODES: http://techdif.co.uk Featuring: Matt Gray: http://mattg.co.uk – @unnamedculprit Gary Brannan: @garybrannan and Chris Joel, who doesn’t do this social media nonsense More from […]


SCIENCE

Hail Cannons and Operation Popeye: Citation Needed 8×04

Tom Scott | March 18, 2026

No, a hail cannon isn’t for if you just want to accelerate a lot of hail really quickly. This week: pseudoscience and real science! BONUS MATERIAL: https://www.youtube.com/watch?v=MgerCSpxSWo FULL PLAYLIST: https://www.youtube.com/playlist?list=PL96C35uN7xGIo2odDuuPeYtb7BtQ1kBhp WEB SITE and MORE AUDIO EPISODES: http://techdif.co.uk Featuring: Matt Gray: http://mattg.co.uk – @unnamedculprit Gary Brannan: @garybrannan and Chris Joel, who […]


SCIENCE

The Crazy Eights Incident and the Pumpy Thing: Citation Needed 8×05

Tom Scott | March 15, 2026

I realise we never actually define “pumpy thing” in this video. I’m not going to define it here either. BONUS MATERIAL: https://www.youtube.com/watch?v=R_hjV2skRac FULL PLAYLIST: https://www.youtube.com/playlist?list=PL96C35uN7xGIo2odDuuPeYtb7BtQ1kBhp WEB SITE and MORE AUDIO EPISODES: http://techdif.co.uk Featuring: Matt Gray: http://mattg.co.uk – @unnamedculprit Gary Brannan: @garybrannan and Chris Joel, who doesn’t do this social media […]




SCIENCE

Why do London’s manholes keep exploding?

Tom Scott | March 7, 2026

Every month or so, somewhere in London, a manhole explodes. It’s so common that it doesn’t make the news unless it’s spectacular or someone gets injured. Here’s why, complete with gratuitous pyrotechnics. Filmed by Perspective Pictures Pyrotechnics by Paul at Darkstar Pyrotechnics News articles: https://www.telegraph.co.uk/finance/newsbysector/energy/11169183/Explosion-in-city-street.html https://www.standard.co.uk/news/london/pavement-explodes-yards-from-pedestrians-and-cars-in-old-street-a3568676.html https://www.express.co.uk/news/uk/819198/london-manhole-cover-explodes-old-street I’m at http://tomscott.com […]


SCIENCE

The Norwegian Butter Crisis and the Ark of Taste: Citation Needed 8×02

Tom Scott | March 5, 2026

This time, we’re taking on smørpanikk, food politics, and – for the second week running – brandy. BONUS MATERIAL: https://www.youtube.com/watch?v=MqOWh0lzKOQ FULL PLAYLIST: https://www.youtube.com/playlist?list=PL96C35uN7xGIo2odDuuPeYtb7BtQ1kBhp WEB SITE and MORE AUDIO EPISODES: http://techdif.co.uk Featuring: Matt Gray: http://mattg.co.uk – @unnamedculprit Gary Brannan: @garybrannan and Chris Joel, who doesn’t do this social media nonsense More […]


SCIENCE

Britain’s largest battery is actually a lake

Tom Scott | March 1, 2026

Dinorwig Power Station, otherwise known as Electric Mountain, is a pumped-storage hydro station in Llanberis, Wales. And yes: it’s Britain’s largest battery. Here’s how it works, and why some of the things you think you know about TV pickups might not be so true any more. Thanks to all the […]


SCIENCE

Why Computers Can’t Count Sometimes

Tom Scott | February 26, 2026

Sometimes, numbers on sites like YouTube and Twitter jump up and down; subscriber counts lag, like-counts bounce all over the place. Why is it so hard for computers to count? To answer that, we need to talk about threading, eventual consistency, and caching. Thanks to my proofreading team, and to […]


SCIENCE

Testing the world’s longest echo

Tom Scott | February 23, 2026

Technically, the Inchindown oil tanks in Invergordon, Scotland, have the world’s longest reverberation, but that makes a much worse title. We tested them with a loud noise and some very sensitive microphones. Matt’s musical experiments: https://www.youtube.com/watch?v=CzMVJkTjKNc Behind the scenes on the Matt and Tom channel: https://www.youtube.com/watch?v=e4qplnaPjbk Thanks to Allan, Alan […]



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