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Everyday Astronaut's Tim Dodd runs an hour-long, data-driven analysis of what rockets actually emit and how that compares with airliners and other industries. It breaks down exhaust by propellant type, per-passenger and total emissions, and ways launches could be cleaner.

Destin Sandlin tours United Launch Alliance's rocket factory with CEO Tory Bruno, showing friction stir welding, structural rocket skins and large milled parts.

Scott Manley explains the plumbing of rocket engines, including pressure-fed, gas generator, expander and staged combustion cycles. He shows why more complex designs exist and what they gain.

The first episode of the Yacht Rock web series, a comedic parody about the smooth soft-rock musicians of the late 1970s and early 80s. It is a short, scripted sketch set at Koko's Boat House.

A two-minute explanation of what a rocket mass heater is, starting from how a conventional wood stove works and why creosote and chimney fires occur. It shows how burning hot and storing the heat in thermal mass makes for an efficient heater.

Joe Barnard of BPS.space shows his model rocket Scout F landing vertically like a SpaceX booster after seven years of attempts. The video documents the successful landing and the build-up to it.

Scott Manley explains the nuclear salt water rocket, Robert Zubrin's concept of a rocket fueled by a rapid nuclear reaction in uranium salt dissolved in water. He covers its extraordinary performance and the dangers of managing it.

A Veritasium video touring Relativity Space and explaining why 3D printing whole rockets cuts tooling costs, allows rapid iteration, reduces part count and enables new designs. It includes an interview with Scott Manley on aerospace engineering.

Curious Droid surveys vertical take-off and landing rockets that predate SpaceX and Blue Origin, including the McDonnell Douglas DC-X of the 1990s. It shows that propulsive landing has about 60 years of history.

A one-minute clip of an Atlas Agena rocket losing pressure on the pad and collapsing. The Atlas relied on tank pressurization for structural integrity, so a simple failure tore it apart.

Everyday Astronaut explains the basic physics of rocket engines, the main engine cycles and fuel types, then compares SpaceX's methane-fueled full-flow staged combustion Raptor to other engines. It runs nearly 50 minutes with chapter markers.

FortNine explains how Harley-Davidson ended up in decline, from a narrow lifestyle niche and an aging customer base to the pandemic hitting a company already in trouble.

A very long, detailed look at the A4/V2 rocket turbopump, the steam-turbine-driven twin propellant pump system. It covers the peroxide and permanganate catalysis that drives the turbine. This is part 1 of a series on V2 components.

Tim Dodd's hour-long deep dive on how rocket engines start, from solid motors to liquid engines. It covers thermal conditioning, spin-up, ignition methods, starting in space, and a step-by-step RS-25 startup.

A 1966 NASA safety film teaching workers how to handle toxic rocket propellants such as hydrazine and nitrogen tetroxide. It explains the hazards of these corrosive, flammable and toxic chemicals and what to do after contamination.

David Mitchell's Soapbox rant on employers who demand passion and enthusiasm from workers, using satire to skewer fake workplace passion.

The official music video for David Hasselhoff's synthwave track True Survivor, written for the film Kung Fury. It is an 80s-style pop song from the Kickstarter-funded movie.

A three-minute David Mitchell's Soapbox rant addressed to Americans about the phrase "could care less", arguing it means the opposite of what speakers intend. Delivered as dry British comic commentary on language usage.

Douglas Crockford's first Yahoo lecture puts JavaScript in historical context. He traces the language's structure and quirks back through the early decades of computer science and programming language history.

Douglas Crockford's Nordic.js 2014 talk on 'the better parts' of JavaScript and programming in general. He argues against `this`, `new` and ES6 classes, and for classless, composition-based object patterns, with some broader remarks on building better structures for the future.

Douglas Crockford tells how JSON was discovered rather than invented, and how its simplicity made it a dominant data interchange format. He also covers surrounding history such as earlier Netscape usage and the 'Good, not Evil' license story.

Douglas Crockford's YUIConf 2012 evening keynote tries to explain monads in a way programmers can actually understand, in the context of JavaScript. He aims to break the 'monad tutorial curse'.

OpenAI cofounder Greg Brockman explains the design principles behind ChatGPT and demos unreleased plug-ins at TED 2023. In the follow-up, TED head Chris Anderson presses him on the timeline of development and the risks of releasing such a tool.

Douglas Crockford's code::dive 2022 talk on what the next programming language should look like. He presents ideas behind his Misty language, including message-passing actors.

A short video built around Douglas Crockford, creator of JSON, saying JavaScript is a flawed language and that developers should eventually move on from it. It is a brief commentary clip with little technical detail.

The first lecture of David Silver's reinforcement learning course, introducing the field and its basic concepts. The course follows the Sutton and Barto textbook.

David Graeber's Talks at Google presentation on his book Debt: The First 5,000 Years, covering the history of debt, the myth of barter and the Jubilee tradition.

David Tong, a Cambridge theoretical physicist, explains at the Royal Institution that the fundamental building blocks of nature are quantum fields rather than particles. He covers what we know about these fields and how they fit into the Standard Model.

A Joe Rogan podcast with retired Navy commander David Fravor, who describes his 2004 Tic Tac UFO encounter, and filmmaker Jeremy Corbell. Fravor walks through the incident and the released videos.

David Beazley's PyCon 2019 tutorial derives the lambda calculus from the ground up in Python, using only single-argument functions. He builds booleans, numerals and more with no other language features.

David Foster Wallace's 2005 commencement speech at Kenyon College, about the default settings of the mind, choosing what to pay attention to, and what we end up worshipping.

David MacKay's TEDxWarwick talk uses basic arithmetic to show how much land and energy renewables would need to power a country like the UK. It explains the limits of sustainable options and why they should still be pursued.

Joe Rogan interviews David Goggins, a retired Navy SEAL and ultramarathon runner, about his path from overweight to elite endurance athlete and pushing beyond comfort zones.

David MacKay, scientific advisor to the UK energy department, gives a Harvard talk on sustainable energy at macro and micro scale, drawn from his book Sustainable Energy Without the Hot Air. It stresses the land area renewables require.

Dwarkesh Patel interviews ancient-DNA geneticist David Reich about human prehistory, including the small group that left Africa around 70,000 years ago and the Yamnaya expansion.

A short video of David Foster Wallace's 'This Is Water' commencement speech about awareness and choosing how to think. It argues that the most obvious realities are the hardest to see, using the fish-in-water parable.

David Nolen explains how ClojureScript is used at Vouch.io to build mobile and web software with a single language and REPL-driven workflow. The talk includes a live coding demo of React Native development.

A short BBC clip in which David Attenborough shows a lyrebird imitating sounds, including camera shutters, car alarms and chainsaws. It comes from the BBC natural history series Life on Earth.

Physicist David Deutsch's TED talk on why science took off, arguing that good explanations are those that are hard to vary. It contrasts scientific explanation with myth.

A clip from the documentary Page One in which New York Times reporter David Carr interviews and confronts the founders of Vice magazine over their media deal. It captures tension between old and new media in 2010.