ground source

A Technology Connections video on how ground-source (geothermal) heat pumps work and why they hold efficiency in winter. It also covers related heat pump information, and the description notes air-source heat pumps have since improved.

Evan Czaplicki, creator of Elm, discusses the hard parts of running an open source project: online community conflict, why its patterns arise, and a cultural history of open source. He offers ideas for more civil, productive communication.

Bryan Cantrill's talk on corporate open source anti-patterns, first given at FISL 2012 and again at the Liferay Symposium. He lays out the mistakes companies make when open sourcing code, such as announcing future open sourcing, and discusses licenses.

A dotJS 2012 conference talk by Fat (of Twitter Bootstrap fame) on what open source really means and why maintainers feel guilty about it. It covers the obligations, expectations and burnout that come with releasing popular open source software, delivered with humor.

Rick Hartley gives a roughly two-hour live training on proper grounding in PCB design. He explains how energy actually flows in the space between conductors, and how that governs noise, EMI, return paths and signal reflections.

Tim Ansell presents the SkyWater PDK, a fully open source manufacturable process development kit for a 130nm process, as the first FOSSi Dial-Up talk. He covers its role in a fully open chip design flow.

David Heinemeier Hansson's opening keynote at RailsConf 2019 argues against the expectation of payment for open source work, drawing on his experience releasing Rails. It also includes lighter asides about the industry.

Elm creator Evan Czaplicki's 2018 Elm Europe talk on how to define success for an open source project and language community. It argues against judging projects by GitHub activity and touches on community expectations.

Mark Handley of UCL explains, with simulation visualizations, how early Starlink satellites without inter-satellite links could still give low-latency wide-area communication by hopping via ground relays. He shows it can beat fibre on many long paths.

Kirsten Dirksen tours the underground ferro-cement dome home of Paula and Bill Lishman, the family behind the geese-led flight story. The skylit earth-sheltered house stays warm below the frost line.

Paul Irish walks through the jQuery source code and shares ten lessons and interesting techniques from it, aimed at JavaScript developers who want to learn from a widely used library.

Lex Fridman's long podcast interview with Yann LeCun on Meta AI, open source, the limits of LLMs, AGI and the future of AI.

A one-minute demo of Safespaces, an open source 3D and VR desktop built on the Arcan project.

Tom Scott and Matt Parker investigate some of the small deceptions and oddities of the London Underground, such as misleading signage and map distortions.

Marcin Jakubowski of Open Source Ecology presents his plan to open-source blueprints for 50 cheap, buildable farming tools, a "civilization starter kit". He argues that opening the means of production can enable self-sustaining lives.

Kirsten Dirksen profiles Steve Rees, who buried two shipping containers to build an earth-cooled, off-grid 640 sq ft home in Northern California for about $30,000, solar included.

Donnie Berkholz of RedMonk gives a Monki Gras talk arguing that abusive, toxic contributors damage open source projects. He makes the case for removing them from communities.

Poul-Henning Kamp's FOSDEM 2014 talk presents a fictitious NSA program called ORCHESTRA, satirizing how intelligence agencies could influence startups and open source. It is a humorous but pointed look at surveillance and subverted software.

C J Silverio, former npm CTO, explains how the JavaScript package commons ended up in the hands of a for-profit company with no accountability. She discusses the cost of running a registry and what the community should do next.

Daniel Stenberg's keynote at FrOSCon 2025 on AI slop attacks on the curl project, with examples of bogus AI-generated security reports. He discusses the toll on maintainers and why various countermeasures don't fit the project.

A 39-minute BBC documentary, built from earlier British Transport Films footage, on how the London Underground's Victoria Line was dug in the 1960s.

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.

Geoff Marshall explains a running gag about London Underground stair signs claiming that the climb equals 15 floors, regardless of how many steps there actually are.

A one-minute political ad from a PAC tied to Missouri Governor Mike Parson attacking a reporter who disclosed a state website flaw as a hacker.

A HOPE XI talk on programming by voice with open source speech recognition. The speaker writes Linux systems code by voice and describes building custom voice grammars as an alternative to the keyboard for programmers with repetitive strain injuries.

A short video that reads out comments from the leaked Team Fortress 2 source code to show the frustration of Valve's programmers over time.

TED curator Chris Anderson interviews Linus Torvalds about his personality, his engineer's pragmatism, and the creation of Linux and Git. Torvalds also discusses taste in code and why he open sourced Linux.

Asianometry explains the EUV light source inside ASML's lithography machines, where lasers hit falling tin droplets twice to produce 13.5 nm light. It walks through the engineering of the droplet generator, the pre-pulse and main laser, and the plasma that results.

Kaze Emanuar explains how he rewrote and optimized the Super Mario 64 source code so it runs far faster on real N64 hardware. He covers performance bottlenecks and fixes in detail for his ROM hacks.

A 2020 video by laowhy86 arguing that the coronavirus did not originate outside China, pointing to evidence about the Wuhan institute and a possible patient zero. It cites sources in the description.

Poul-Henning Kamp's FOSDEM 2014 talk is a hypothetical account of how an intelligence agency such as the NSA would sabotage open source software, standards and online discussion. It covers Skype's history, OpenSSL and psyops against standards.

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.

Skateboarding pioneer Rodney Mullen talks about how the open skate community and its environments drive the invention of new tricks out of pure passion. He draws parallels to collaboration and open source.

A 24-hour loop of Star Trek TNG starship engine ambience, meant as background sound for relaxing, sleeping or concentrating.

A 36C3 talk by Bunnie Huang arguing that open source is necessary but not sufficient for trustworthy hardware, because verifying hardware is destructive and so creates a time-of-check/time-of-use gap. It surveys supply chain security and classes of hardware attacks, and presents the Betrusted approach to narrowing that gap.

A documentary following Robert Zubrin and the Mars Society as they push the Mars Direct plan for sending humans to Mars using current technology and local resources. It also covers the clash with NASA's more expensive approach.

A long information session where The Boring Company presents its vision for Loop, an underground high-speed transit system, and the traffic problems it aims to solve. It includes discussion of faster tunnel boring and electrification.

Rachel Potvin describes the scale of Google's codebase and its custom monolithic source repository. She explains the reasons for the monorepo model, the tooling that makes it workable, and its tradeoffs.

Karen Sandler's keynote at Linux.conf.au 2012 on the software running inside medical devices such as her own pacemaker-defibrillator. She discusses the difficulty of learning what code runs in life-sustaining devices and why open source matters there.

A reverse engineer walks through fixing a ten-year-old bug in Guitar Hero III without access to its source code, using a disassembler and decompiler. It is technical but explained step by step.