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A hobbyist compares vertical bifacial solar panels against south-facing angled panels using winter production results. It tests whether the usual mounting approach is actually best.

A roughly two and a half hour Noonautics panel on DMT research moderated by Graham Hancock with Andrew Gallimore and Rick Strassman. It discusses planned DMTx experiments and reported DMT experiences.

Steve Mould shows that LEDs and solar panels are both diodes made from semiconductors, so a solar panel can emit light and an LED can generate electricity. He demonstrates a small solar panel lighting up.

A panel from the Lang NEXT 2014 conference on systems programming in 2014 and beyond. Language designers including Bjarne Stroustrup and Rob Pike discuss the topic, including C++ header compile times.

A short Bookeen R&D demo showing real-time web page scrolling on an eInk panel, far faster than typical e-readers. It was a prototype for the next generation of Cybook readers.

A 29C3 panel with whistleblowers Jesselyn Radack, Thomas Drake and William Binney. They talk about what happens when exposing secret government power becomes a crime, and about surveillance abuses.

A panel with Tony Hoare, Joe Armstrong and Carl Hewitt, hosted by Francesco Cesarini, on the history and future of concurrency. The three creators of CSP, Erlang and the actor model discuss their differing approaches.

A Computer History Museum oral history panel with four 3dfx founders on the company's rise with Voodoo Graphics and Glide, and its fall into bankruptcy. It runs about two and a half hours.

A 2001 panel with Paul Graham, John Maeda, Jonathan Rees and Guy Steele on programming language design, part of the Dynamic Languages Wizards Series.

Cody's Lab builds a prototype algae growing panel as an experiment before making more. The channel also shows growing algae for consumption.

A short Bookeen R&D demo showing smooth H.264 video playback on a Pearl E Ink panel, driven by a TI OMAP3621 chip and custom controller software.

David Crane, designer of Pitfall for the Atari 2600, gives a GDC 2011 postmortem on the game's design challenges. He covers how he fit a large world into the console's tiny memory. The session ends with Q&A.

Applied Science builds a replica Apollo DSKY using an electroluminescent driver circuit and screen-printed conductive ink, with source and PCB files published.

Tech Ingredients shows how to build cheap, high-performance flat-panel speakers using audio exciters on sheet materials such as foam-core board. It explains how distributed-mode speakers work and walks through experiments to find good designs.

The 2016 Isaac Asimov Memorial Debate, moderated by Neil deGrasse Tyson, in which a panel of physicists and philosophers debates whether the universe is a simulation. Participants include David Chalmers, Zohreh Davoudi and James Gates.

Tech Ingredients shows how to make a homemade radiative cooling paint, with a custom liquid panel that cools below ambient temperature outdoors. The video covers the materials and how to apply the paint.

Thunderf00t argues that Zero Mass Water's solar-powered atmospheric water generator is essentially a dehumidifier with solar panels. He critiques its economics and physics, especially in arid places.

Technology Connections explains that US household power is split-phase, with two 120V legs that combine to 240V for large appliances. It covers the breaker panel and how the system works.

Tech Ingredients shows how to build flat panel speakers from exciters and foam board, with construction guidelines, measured SPL comparisons and a complete system playing music.

A full-day recording of the University of Utah computer science department's 50th anniversary event with panels, keynotes and talks by alumni and pioneers. It includes Ivan Sutherland's presentation on single flux quantum electronics.

A demonstration of loading Altair 4K BASIC on an Altair 8800 clone, using a front-panel bootloader and an ASR-33 Teletype. It shows the full sequence of entering boot code, loading BASIC and running a program.

A panel from the Beneficial AI 2017 conference moderated by Max Tegmark, with Elon Musk, Stuart Russell, Kurzweil, Hassabis, Harris, Bostrom, Chalmers and others. They discuss likely outcomes of human-level AGI and what outcomes are desirable.

A GopherCon 2014 session where Blake Mizerany replaced his planned talk with a panel discussion with members of the Go team. It covers Go's design choices and community questions.

Vaclav Smil's talk on historic energy transitions and what they imply for climate investment. He argues that transitions are slow, technology improves gradually, and only absolute cuts in energy use would truly work.

Technology Connections explains why heat pumps matter right now, covering their efficiency, how they hold up in cold weather and the energy savings over burning fuel. It follows his earlier explainer on how they work.

Planet of the Humans, a full documentary by Jeff Gibbs presented by Michael Moore, arguing that the green movement has been co-opted by corporate and wealthy interests and that techno-fixes are not enough.

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.

A long Technology Connections video arguing that public understanding of renewable energy is distorted. It covers solar economics, land use compared with ethanol corn, and battery myths such as cobalt.

A feature-length film by the Makani team chronicling their thirteen-year effort to build energy kites that harvest wind power, with footage from test sites in Hawaii, California and Norway. It shows the engineering, the team and the eventual shutdown.

Technology Connections' long closing video in his heat pump series, arguing that adopting heat pumps is well within reach. It explains how they work and what it takes to start using them.

Practical Engineering explains why connecting solar and other inverter-based generation to the grid is hard. It covers grid stability, load balancing and the behind-the-scenes engineering challenges of renewables.

Utah State plant scientist Bruce Bugbee presents his analysis of the energy and environmental costs of vertical and indoor farming. He argues artificial lighting cannot compete with sunlight in fields or greenhouses.

Bill Gates at Stanford's Global Energy Forum argues that cheaper solar, wind and storage are not nearly enough to stop climate change. He discusses natural gas, a carbon tax, nuclear, battery costs and the responsibilities of developing versus developed economies.

Engineering Explained works through whether electric cars are really worse for the environment than gasoline cars. It covers battery production emissions, the electricity mix used to charge, and how long an EV takes to break even on lifetime emissions.

Real Engineering examines the efficiency of hydrogen as an energy carrier. It follows production, storage and fuel cell conversion losses and compares hydrogen cars with battery electric vehicles.

Practical Engineering explains pumped storage hydropower, which makes up most grid-scale electricity storage. It covers how it works and why it fits only certain geographies.

Aging Wheels compares a road trip in a Polestar 2 with an identical drive in a Tesla, showing the charging problems of non-Tesla EVs. It argues that outside Tesla's network, EV road trips have become frustrating.

Engineering Explained examines Toyota's hydrogen-burning V8 engine built with Yamaha and explains the practical problems of hydrogen combustion vehicles. It covers efficiency, storage and distribution issues.

Dr. Bruce Bugbee walks through the calculations for crop yield potential when light is the limiting factor, from photosynthetic quantum yield through respiration efficiency and harvest index, using the Energy Cascade Model.

Real Engineering looks at why Africa's abundant solar potential is hard to turn into usable power, especially for Europe. It covers the transmission, infrastructure and economic obstacles, and the pivot from concentrated solar to photovoltaics.