Derek Muller

On a Tuesday in May 2025, the American Association for the Advancement of Science handed Derek Muller a gold Kavli for journalism. The piece in question was a YouTube video about PFAS - the so-called forever chemicals - titled, with characteristic restraint, "How One Company Secretly Poisoned The Planet." It had not been published by a newspaper. It had not aired on a network. It had been made in a garage-grade studio by a Canadian-Australian physicist who, fifteen years earlier, had written a dissertation about why videos like this one work.

The dissertation was the prototype. The channel is the production line. Veritasium, Latin for truth plus the chemical suffix -ium, is what happens when a physics PhD figures out that the most stubborn enemy of learning is the certainty that you already know. Muller built a media company around that single observation. Twenty million people pressed subscribe.

He is now based in Portugal, married last November to the planetary scientist Raquel Nuno, raising four children, and still posting roughly every fortnight about why a thing falls, why a wheel rolls, or why something that everyone agrees on is, on closer inspection, wrong. The man does not slow down. The audience does not look away.

Ask him to explain his job in one sentence and he will tell you the channel name is a pun. Ask him to explain it in two and you start to see the shape of the thing.

He was born in Traralgon, in the brown coal country of Victoria. The family - South African parents, two sisters named Kirstie and Marilouise - decamped to Vancouver when Derek was eighteen months old. So the Australian was raised Canadian. He came back the other way for graduate school, which is the polite way of saying he flew across the planet to study film and then quietly switched to physics.

At Queen's University in Kingston he took an engineering physics degree, the kind that makes you both employable and difficult at dinner parties. Then Sydney. The PhD topic was unfashionable: not particles, not stars, but the question of why physics videos so often fail to teach physics. He defended in 2008 with a thesis whose title - Designing Effective Multimedia for Physics Education - now reads less like an academic exercise and more like a business plan.

Catalyst, the ABC's flagship science show, hired him next. He learned how to hold a microphone and how to make the technical legible without sanding it down. Three years later, in 2011, he started Veritasium. The early videos are charmingly rough. A man in a striped shirt corners pedestrians in Sydney and asks them which direction a swing will move. They answer wrong. He explains why. The format was already complete.

The trick he had spotted in graduate school was simple and counterintuitive. People do not show up to a physics video as blank slates. They arrive with theories - Aristotelian, intuitive, mostly mistaken. A polished explainer floats over these theories without disturbing them. A messy one, where the misconception is stated first and then taken apart on screen, sticks. So Muller built the messy version. Then he built it again, and again, and again.

The dissertation that founded everything tested a quiet hypothesis. Take two short physics videos. Make the first one tidy: a calm voice, clear graphics, the correct explanation, no detours. Make the second one awkward: a student says the wrong thing, the host engages with the wrong thing, the wrong thing is dismantled in front of the camera. Then test the viewers.

The tidy video left learners confident and unchanged. The awkward video left them rattled and correct. Confusion, it turned out, was not a bug in the teaching loop. It was the loop.

Most of Veritasium reads like a series of small experiments in this finding. The host poses a question - which way will a tension cord snap, will a sailboat go faster than the wind that pushes it, what colour is a mirror - and pedestrians give the obvious answer. The obvious answer is wrong. Then the video does the work of making the wrong answer interesting.

It is the trick a good professor uses in a tutorial. Muller's contribution is that he industrialised it. He turned the seminar into broadcast and the broadcast into an internet feed and the feed into a company.

Ask Muller what he wants the channel to do and the answer is not louder. The answer is stickier. He has spent his career building a quiet thesis about how minds change, and the thesis only works if the teaching survives contact with how people actually think. That is harder than viral. That is the long game.

The PFAS investigation in 2025 hinted at where it goes next. Not pop physics. Pop accountability. The same misconception engine, pointed at a corporation instead of a slinky. The same pattern - here is what you assume, here is why you are wrong, here is the evidence - applied to the things people would rather not look at.

The channel is still mostly about why the wheel rolls and why the sky is blue. But the Kavli judges noticed that the method has range. You can use it to teach physics. You can use it to ruin a chemical company's afternoon. The tool does not care.