HackerTube.liveSUBJECT FIELD NOTES / 263 RECOMMENDED VIDEOS
Start with a subject you know, or open something unfamiliar. This collection groups videos by the original source’s topic labels. Positive recommendations are shown first; their counts describe the archived comments, rather than all of Hacker News.
FROM THE COLLECTION
explainerTechnology Connections explains how heat pumps work as reversed air conditioners and why they can deliver several times the heat of resistive heating per unit of energy. It also tackles common myths such as poor cold-weather performance.
![Frame from Dominion (2018) - full documentary [Official]](https://i.ytimg.com/vi/LQRAfJyEsko/hq2.jpg)
documentaryDominion is a two-hour documentary using drones and hidden cameras to expose conditions in animal agriculture, including food, clothing, entertainment and research. It questions humanity's dominion over animals.
lectureZach Hartwig of MIT introduces the key concepts of magnetic fusion energy and the state of fusion research. He then presents MIT's proposed pathway of using high-field superconducting magnets to build smaller, cheaper tokamaks on a climate-relevant timescale.
documentaryThe first episode of James Burke's 1978 BBC series Connections traces modern dependence on complex technological networks, starting with the 1965 New York blackout, and moves through ancient agriculture to Kuwait's oil-driven leap.
talkA long talk by rancher Gabe Brown on turning his North Dakota farm into a regenerative ecosystem using no-till, cover crops and integrated livestock. It covers the five principles of soil health and how they pay off financially.
lecturePart 1 of a lecture by physicist Albert Bartlett on the exponential function and its consequences for population growth, resource use and energy. It argues that steady growth rates quickly lead to enormous quantities.
talkMIT's Prof. Dennis Whyte explains the ARC/SPARC compact tokamak approach, in which new high-temperature superconducting magnets allow smaller and cheaper fusion reactors. He covers fusion physics, performance trends and the engineering path to net energy.
talkVaclav 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.
explainerTechnology 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.
talkAllan Savory's TED talk arguing that desertification of grasslands can be reversed with holistic managed grazing, which he says would also help reverse climate change. TED notes that other scientists have challenged his claims.
explainerKurzgesagt examines what individuals can do about climate change, covering lesser-known carbon sources and why systemic and political change matter more than personal footprints.
explainerSabine Hossenfelder explains how close nuclear fusion really is to break-even, and why headlines about ITER and lab milestones are misleading. She distinguishes plasma gain (Q plasma) from whole-system gain (Q total) and shows the latter is still far below one.
Each film opens a page with its creator link and available HN context. Labels and summaries are inherited from an AI-assisted source and may need correction. Read how recommendations are counted.