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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.

A five-minute SuperMemo demo of incremental reading: importing a Wikipedia article on nutrition, extracting passages, making cloze deletions and finishing the item. It lists the keyboard shortcuts used.

Devine Lu Linvega of Hundred Rabbits talks about low-power, offline computing, esoteric languages and the Uxn virtual machine, informed by years of sailing the Pacific. The talk frames computing sustainability through a permaculture lens.

Geoff Lawton documents a permaculture project that turned barren Jordanian desert into green, productive land. It covers the techniques he used.

A segment from the animated film The Twelve Tasks of Asterix, in which Asterix must get Permit A 38 from a maze-like building run by unhelpful bureaucrats. He wins by asking for a nonexistent permit.

A 2007 clip in which immigration attorneys describe how they help employers run classified ads designed not to find qualified American applicants, so they can secure green cards for H-1B workers. It is presented as an exposé of the PERM process.

A short film about the Dervaes family, who grow over 6,000 pounds of food a year on a tenth of an acre near downtown Los Angeles. They grow more than 400 plant species, keep chickens and ducks, and get most of their food from the plot.

A 2006 IBM commercial depicting a future supermarket where shoppers walk out and RFID automatically charges them for their items.

A deadpan comedy video offering mock advice on defending your car from supermaneuverable fighter jets and air-to-surface missiles. It jokes about installing close-in Gatling guns and radar.

ReasonTV tells the story of Bob Tillman, who spent nearly five years and $1.4 million trying to convert his San Francisco laundromat into apartments. It walks through the permitting, appeals and neighborhood opposition he faced.

Permaculture instructor Andrew Millison visits the chinampas, the floating gardens of Xochimilco in Mexico City. He looks at this ancient Aztec agricultural system and the project restoring it.

Permaculture instructor Andrew Millison visits the village of Garavadi in Maharashtra, India, which took part in the Paani Foundation's Water Cup competition. It shows the water harvesting structures the villagers built in 45 days and how they restored groundwater and the local economy.

Permaculture instructor Andrew Millison travels with the UN World Food Programme to Niger to see land recovery within the Great Green Wall, where rainwater harvesting is boosting food security and restoring the ecosystem.

Dylan Beattie's parody of 'You Give Love a Bad Name' about hypermedia APIs and REST, performed with his band at developer conferences.

An engineering explainer on why Tesla abandoned the induction motor for the Model 3 and used an IPM-SynRM design. It covers the reluctance torque and permanent magnet principles behind the choice.

A 35C3 talk presenting a proof-of-concept SPI bus hardware implant with capabilities like those alleged in the Bloomberg Supermicro story, plus countermeasures for detecting such modchips.

Kurzgesagt explores the idea that life might have arisen shortly after the Big Bang, when the whole universe was warm enough to be habitable. It discusses what that would mean for the origin and spread of life.

A Google I/O 2014 fireside chat in which members of the Android platform team answer questions about why the platform works the way it does. It is moderated by developer advocate Reto Meier.

A short promotional video of a 5-axis CNC machine milling an elaborate helmet, made by DAISHIN SEIKI with a DMG machine and hyperMILL CAM software. It shows what 5-axis machining can produce.

Excerpts from Nick Breeze's 2012 interview with researcher Natalia Shakhova about methane release from the East Siberian Arctic Shelf. She discusses the risk of abrupt methane emissions.

A ten-minute explainer from Hypermind on the wisdom of crowds, covering Galton's discovery and the diversity theorem. It argues that collective intelligence comes from diversity, independence and aggregation.

Andrew "bunnie" Huang examines how realistic hardware supply chain attacks are, from rogue insiders to nation states, in the wake of the Bloomberg Businessweek report. He explains how undocumented components could be hidden on boards and how hard they are to spot.

Vsauce explores math through card tricks and big numbers, including an animation of how enormous 52 factorial, the number of deck orderings, really is.

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.

Al Baydha project co-founder Neal Spackman gives a final update nine years in, explaining how desertification followed the loss of indigenous land management and how the land has changed since inputs stopped in 2016. It lists which species worked best.

A 2019 Android Dev Summit session on the scoped storage model in Android 10. It gives a plan overview and best practices for apps adapting to the new restrictions.

A 1953 US Navy training film explaining the basic mechanisms in mechanical fire control computers aboard ships. It shows how gears, differentials and cams solved mathematical problems in permanent mechanical form.

Rich Hickey's philosophical talk from the first Clojure Conj in 2010. He argues that good design comes from deliberate, away-from-keyboard thinking, and describes how to feed the background mind so it solves problems.

A video explaining why Japanese cities look the way they do, through Japan's national tiered zoning system that permits mixed use and flexible development. It compares this approach with more restrictive zoning elsewhere.

Christopher Domas's REcon 2013 talk on dynamic binary visualization for reverse engineering. He shows how rendering binary data as interactive visual maps and trigraphs reveals structure that hex dumps hide, leading to his Cantor.dust tool.

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.

Ross Scott of Accursed Farms lays out a campaign to stop publishers from permanently shutting down games, using The Crew as the test case. He covers government initiatives and the legal options, and the stopkillinggames.com site.

Kurzgesagt explains black hole stars, a hypothesized kind of giant star with a black hole at its core that could be a route to early supermassive black holes.

Kurzgesagt explains why, even with science-fiction technology, most of the universe is permanently out of reach because of cosmic expansion and finite resources.

Tom Scott explains how decades of deep coal mining sank parts of Germany's Ruhr Valley and changed its drainage. Pumps run by Emschergenossenschaft must now work permanently to keep towns and cities from flooding.

A More Perfect Union report on xAI's data center in Memphis, which residents say burns gas without permits or pollution controls and harms their health.

A time-lapse from ESO's Very Large Telescope showing stars orbiting the supermassive black hole at the Milky Way's center over nearly 20 years.

PBS Space Time explains how general relativity permits warp drive in principle and covers recent theoretical advances toward solving the negative energy problem.

A short Apple Get a Mac ad that mocks Windows Vista's constant security pop-up prompts.