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A short clip of Penn and Teller arguing, in blunt and profane language, for vaccination and against anti-vaccine claims. It covers risk versus benefit and herd immunity.

Cheng Lou's react-europe 2016 talk lays out a mental framework for thinking about abstraction levels in JavaScript tooling, from Angular and Grunt to Webpack and React. It uses that framework to reason about the cost of abstractions and how to choose between competing solutions.

Practical Engineering explains what a black start is: restarting a power grid after total collapse. It shows why most plants need outside power to start and why rebuilding a synchronized grid is delicate and high-stakes.

A four-minute tour of the TeXmacs scientific editor, showing math typing, figures, citations, a drawing tool, document styles, HTML export, presentations and animations.

A PBS Space Time episode explaining how space and time swap roles inside a black hole's event horizon. It is part of the channel's black hole series.

An Isaac Arthur episode on civilizations in the dark, post-stellar universe, including black hole farming, accretion disks and the Penrose process as energy sources.

SsethTzeentach reviews Space Station 13, the chaotic multiplayer game, by recounting absurd stories of singularities, malfunctioning AIs and plasma fires.

A PBS Space Time episode hosted by Gabe Perez-Giz on the nature of spacetime and whether space and time are fundamental. It builds up reference frames and causality in a short, dense format.

Machine Thinking argues the 1751 machine, a metal-cutting lathe associated with Vaucanson, triggered the biggest explosion of wealth in history by enabling precise manufacturing of other machines.

A PBS Space Time episode asking what black holes really are and whether events can happen inside them. It covers event horizons, time dilation and common misconceptions about black holes.

Dan Liebgold of Naughty Dog gives a RacketCon 2013 keynote on using Racket in PlayStation 3 game development. He explains the Racket-based DSLs used for game data and scripting, which replaced the studio's earlier GOAL-based toolchain.

The full webcast of SpaceX's Falcon 1 Flight 4, the first privately developed liquid-fueled rocket to reach orbit, on 28 September 2008. It includes the crew's cheering and Elon Musk's statement afterward.

PBS Space Time episode on the black hole information paradox, covering how black holes seem to destroy information, the no-hair conjecture and the proposed role of the event horizon. It is part of a series on black holes.

Tantacrul critiques the UX and UI of Steinberg's Dorico music notation software, comparing it with Sibelius and user testing it with real musicians alongside his own attempt to compose in it.

A restored recording of Steve Jobs unveiling the original Macintosh in 1984, including the moment it is taken out of its bag and speaks. The upload comes from the team that rediscovered and restored the lost footage.

A PBS Space Time episode on fuzzballs, the string-theory proposal for black holes that replaces the singularity with a tangle of strings. It explains why black holes seem to both have to exist and break known physics.

A short preview of OTOY's Brigade 3.0 engine doing real-time path tracing, running on two GTX Titans.

A video tour of Apple's highly automated Macintosh factory in Fremont, California, where the Mac SE and Macintosh II were built.

Gameplay footage of the original 1986 Macintosh version of Dark Castle by Silicon Beach Software. The uploader argues the original is a great game that was tarnished by inferior ports.

A short Cracked video arguing, tongue in cheek, that the world of the film Idiocracy would actually be a utopia. It plays with the movie's premise and today's politics.

Tantacrul tells the story of Audacity, the widely used free audio editor, and announces his involvement in the project. It includes an interview with the original developers and a look at the software's usability.

A four-minute Emacs Rocks screencast demonstrating the multiple-cursors package for Emacs. It shows how editing at many places at once can replace repetitive manual edits.

A PBS Space Time episode asking whether our universe could sit inside a black hole. It covers what physicists think happens inside black holes and the arguments for and against this idea.

A React Conf talk by Xuan Huang previewing React Forget, a compiler that automatically memoizes components. It argues for making memoization the default so developers need not write useMemo or useCallback by hand.

A 2018 Facebook UK ad, part of the 'Here Together' campaign, promising to do more to keep users safe and protect their privacy after the Cambridge Analytica scandal.

Leandro Facchinetti explains why he thinks Racket is a great language and why he stopped using it. He describes his backstory and experiences with the Racket community.

PBS Space Time asks whether dark matter could be made of primordial black holes. It walks through the observational constraints that limit this idea.

A 1982 Xerox PARC film, presented at CHI '90, in which Star designers David Canfield Smith and Charles Irby give an overview of the Xerox Star interface. It shows the document-centric, icon-and-window office system.

Technology Connections explains that the so-called EV charger in an electric car's charging cable or wall unit is really an EVSE, a smart switch that safely delivers AC power. The actual charger is inside the car. The video covers the safety signaling and mechanisms involved.

Dan Abramov live-codes hot reloading with time-travel debugging at React Europe 2015, debuting Redux and its devtools. The slides themselves are driven by application state.

A three-minute Emacs Rocks screencast demonstrating Magit, the Git interface inside Emacs, including staging and other everyday operations.

The first three talks from React Conf 2018, by Sophie Alpert, Dan Abramov and Ryan Florence. They introduce React Hooks and explain the problems with classes that hooks solve.

PBS Space Time explains what happens as you approach and cross a black hole's event horizon, using Penrose diagrams and light cones as the tool for understanding spacetime there.

Isaac Arthur explores space-based solar power, in which satellites beam energy down via microwaves to rectennas on Earth. He discusses feasibility, profitability and its role in spurring space colonization.

Jacob Collier layers ten vocal parts to arrange and perform Harold Darke's carol "In the Bleak Midwinter", with inventive harmony and tuning.

Glenn Gould's 1955 recording of Bach's Goldberg Variations, uploaded as a continuous performance of about 39 minutes.

A short SpaceX video of the Dragon 2 pad abort test, in which the capsule's thrusters fire to carry it away from the launch pad. It also shows the pad deluge system.

Josef Holzer walks through his family's Krameterhof, one of Europe's oldest permaculture farms in the Austrian mountains, with fish ponds, terraces, fruit trees and grazing animals. It showcases water management and microclimates.

An episode of REACT in which children try to figure out 1970s-1980s computers, including an Apple II and floppy disks. It was made to promote the AMC show Halt and Catch Fire.

Andrej Karpathy's first Neural Networks: Zero to Hero lecture, which builds micrograd, a tiny autograd engine, from scratch in Python. It explains backpropagation and neural network training step by step, assuming only basic Python and some high-school calculus.