Tech talks
Best Tech Talks 2020, Ranked by Hacker News
First recommended on Hacker News in 2020, still worth watching: these 387 tech talks and lectures earned 1364 recommendations across the years.
Type
TalkLectureDocumentaryExplainerDemoTutorialInterviewCommentaryComedyMusicPodcastsNews & reportingCoursesFeatures
Evergreen only
2 mo on HNWhy is this number everywhere?
Veritasium
Recommended 2× on HN · 2024–2026
2 mo on HNHow Analog Color TV Works: The Beginnings
Technology Connections
Recommended 2× on HN · 2019–2026
2 mo on HNI Saved a PNG Image To A Bird
Benn Jordan
Recommended 2× on HN · 2025–2026
2 mo on HNAlpha Zero's "Immortal Zugzwang Game" against Stockfish
agadmator's Chess Channel
Recommended 2× on HN · 2019–2025
2 mo on HNAvoiding Negative Side Effects: Concrete Problems in AI Safety part 1
Robert Miles AI Safety
Recommended 2× on HN · 2018–2023
2 mo on HNThe Hubble Ultra Deep Field in 3D
Deep Astronomy
Recommended 2× on HN · 2012–2022
2 mo on HNExtremely Large Numbers 1 - Introduction
Giroux Studios
Recommended 2× on HN · 2016–2022
2 mo on HNASTOUNDING: 1 + 2 + 3 + 4 + 5 + ... = -1/12
Numberphile
Recommended 3× on HN · 2014–2023
2 mo on HNWhy Are Emulators Legal? Dolphin vs. Nintendo, and the Fate of Emulation [Great Emu War Pt. 1]
Moon Channel
Recommended 2× on HN · 2023–2024
2 mo on HNWhy ChatGPT Can't Draw a Full Glass of Wine
Alex O'Connor
Recommended 2× on HN · 2025–2025
2 mo on HNIn Norway, Everyone Can Know How Much You Earn
Tom Scott
Recommended 2× on HN · 2016–2021
2 mo on HNHow a TV Works in Slow Motion - The Slow Mo Guys
The Slow Mo Guys
Recommended 2× on HN · 2022–2026
2 mo on HNDiffie-Hellman Key Exchange
Art of the Problem
Recommended 2× on HN · 2012–2016
2 mo on HNAI "Stop Button" Problem - Computerphile
Computerphile
Recommended 2× on HN · 2017–2026
2 mo on HNAI can't cross this line and we don't know why.
Welch Labs
Recommended 2× on HN · 2024–2025
2 mo on HNWhy Asimov's Laws of Robotics Don't Work - Computerphile
Computerphile
Recommended 2× on HN · 2015–2023
2 mo on HNIf money was no object, should you run every medical test?
Medlife Crisis
Recommended 2× on HN · 2019–2024
2 mo on HN10 Reasons to Ignore AI Safety
Robert Miles AI Safety
Recommended 2× on HN · 2022–2024
2 mo on HNThe Braitenberg Vehicles
Brian Douglas
Recommended 2× on HN · 2020–2024
2 mo on HNThis 1970s tank simulator drives through a tiny world
Tom Scott
Recommended 2× on HN · 2024–2025
2 mo on HNBlue Bubbles vs Green Bubbles: Explained!
Marques Brownlee
Recommended 2× on HN · 2022–2023
2 mo on HNWhy Western Designs Fail in Developing Countries
Design Theory
Recommended 2× on HN · 2024–2025
2 mo on HNWhy Web Filters Don't Work: Penistone and the Scunthorpe Problem
Tom Scott
Recommended 2× on HN · 2017–2026
2 mo on HNWhy Everyone Is Talking About Data Centers In Space
Scott Manley
Recommended 2× on HN · 2026–2026
2 mo on HNThe 100 Year Flood Is Not What You Think It Is (Maybe)
Practical Engineering
Recommended 2× on HN · 2017–2025
2 mo on HNAll you need to know to understand 5G
Sabine Hossenfelder
Recommended 2× on HN · 2021–2022
2 mo on HNIs It Really Impossible To Cool A Datacenter In Space?
Scott Manley
Recommended 2× on HN · 2026–2026
2 mo on HNWhy Sony's Beta Videotape System Failed--and failed hard (Part 1)
Technology Connections
Recommended 2× on HN · 2022–2026
2 mo on HNChip & PIN Fraud Explained - Computerphile
Computerphile
Recommended 2× on HN · 2015–2018
2 mo on HNDefeating Microwave Weapons! - Part 1
Tech Ingredients
Recommended 2× on HN · 2022–2025
2 mo on HNOpenAI Plays Hide and Seek…and Breaks The Game! 🤖
Two Minute Papers
Recommended 2× on HN · 2020–2021
2 mo on HNThe Lightning Network Explained (Litecoin/Bitcoin)
Franklyn
Recommended 2× on HN · 2017–2018
2 mo on HNMotorcycle Airbags Exist – But No One Uses Them?
FortNine
Recommended 3× on HN · 2021–2021
2 mo on HNDrawing Conclusions: Is renting really a waste of money?
The Globe and Mail
Recommended 2× on HN · 2018–2019
2 mo on HNWhy Russia Can’t Replace TSMC
Asianometry
Recommended 2× on HN · 2022–2024
2 mo on HNQuantum Computing Expert Explains One Concept in 5 Levels of Difficulty | WIRED
WIRED
Recommended 2× on HN · 2019–2021