ios

NASA's animated explanation of the Curiosity rover's Mars landing, which relied on a complex automated sequence taking about seven minutes. It features NASA engineers discussing the risks before the 2012 landing.

A compilation of the hacking scenes from the 1995 film Hackers, featuring flashy visualizations of computer intrusion.

The Who performing Won't Get Fooled Again at Shepperton Studios in 1978, filmed for The Kids Are Alright. It was Keith Moon's last performance with the band.

PBS Space Time explains the quantum eraser experiment, in which erasing which-path information appears to reverse causality in a double-slit setup. It discusses what this means for quantum mechanics.

A PBS Space Time episode introducing de Broglie-Bohm pilot wave theory, an interpretation of quantum mechanics that avoids much of the strangeness of the mainstream views. It is aimed at curious lay viewers.

A PBS Space Time episode asking what matter, mass, and energy really are, starting with inertial versus gravitational mass and what mass-energy equivalence means.

PBS Space Time introduces Miguel Alcubierre's warp drive, explaining how spacetime itself could be warped rather than moving a ship through it, and whether it is physically possible.

PBS Space Time explains what happens as you approach and cross a black hole's event horizon, using Penrose diagrams and light cones as the tool for understanding spacetime there.

PBS Space Time explains the Higgs field and how the Higgs mechanism gives particles mass within quantum field theory. It is a ten-minute overview for a lay audience.

PBS Space Time explains the Bohr-Einstein debate over quantum mechanics and how quantum entanglement settled it. It covers the weirdness of measurement and nonlocal correlations.

Clifford Stoll's energetic TED talk, a wandering mix of anecdotes, a science experiment and thoughts on curiosity, education and technology. He is the author of The Cuckoo's Egg.

Numberphile visits Cliff Stoll, the man behind ACME Klein Bottles, and sees how he stores a thousand glass Klein bottles in a crawlspace under his house. A remote-controlled forklift fetches them.

A ten-minute card-magic act by Dani DaOrtiz performed on Penn & Teller: Fool Us in 2022. It is built on timing, misdirection and psychology, and the method defeated the show's hosts.

Archer Lars Andersen demonstrates fast, accurate shooting techniques he says he revived from historical art and texts, arguing Hollywood archery is not historical.

A binaural audio demo, the 'Virtual Barber Shop', that places a barber moving around your head. It works best with headphones and closed eyes.

The Lock Picking Lawyer tests the supposedly unpickable lock designs built by the Stuff Made Here channel. He looks for bypasses and weaknesses in the novel anti-picking mechanisms.

Magician Kostya Kimlat performs a card trick on Penn & Teller: Fool Us that fooled the duo, using Penn's favorite card trick as a basis.

Hungarian folk dancers from Sapientia University act out the quicksort algorithm step by step, with music. It is part of the AlgoRythmics series of sorting algorithms performed as dance.

Wintergatan's video of the Marble Machine, a hand-built music instrument that plays a song using about 2000 marbles on a mechanical clockwork-style mechanism.

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 recorded phone call in which the Lenny bot, a looping set of prerecorded replies from a rambling old man, keeps a telemarketer on the line for 14 minutes. The uploader calls it the best Lenny call yet.

A short video of a man moving a 20 ton stone block by himself using wood and levers. It is part of a pyramid-mysteries channel.

Theo Jansen shows many of his Strandbeests, wind-powered walking kinetic sculptures, set to Khachaturian's Spartacus. It presents his work since 1990 on creating new forms of life on beaches.

Mentalist Derren Brown plays nine skilled English chess players, including four grandmasters, simultaneously on his TV show. The trick behind the apparent win is the point of the segment.

A five-minute demonstration of the Shepard tone, an audio illusion made from octave-separated tones that makes pitch seem to rise endlessly without ever getting higher.

Penn and Teller help Rob Pike and Dennis Ritchie of Bell Labs play a prank on Nobel-winning physicist Arno Penzias. The clip shows the gag and its setup.

Mike Boyd takes up Smarter Every Day's challenge to learn to ride the Backwards Brain Bike, a bicycle whose steering is inverted, and rides 50 meters. It shows how hard it is to unlearn a motor skill.

NASA JPL engineers explain the final minutes of the Curiosity rover's entry, descent and landing on Mars, which combined aerobraking, a parachute and a skycrane. It lays out the tight sequence of events that all had to work automatically.

Westwood Studios co-founder Louis Castle talks about how pathfinding was solved in Command & Conquer: Tiberian Sun, in an Ars Technica War Stories episode. It also touches on other challenges in Westwood's RTS games.

Martin Jonasson and Petri Purho take a bland Breakout clone and add layer after layer of 'juice' such as easing, particles, screen shake and sound until it feels alive. A live demo makes the effect of small feedback details obvious.

Morphcat Games explains how they fit Micro Mages, a full-featured NES game, into 40 kilobytes. It covers compression of sprites and level layouts and other space-saving tricks.

Luis von Ahn, creator of CAPTCHA and reCAPTCHA, explains how small contributions from many people online can digitize books. He then introduces Duolingo as a way to translate the web while people learn languages.

CGP Grey explains that postal codes are routing instructions for mail rather than geographic regions. He looks at the quirks and problems this causes.

Making-of video about ROM City Rampage, the NES version of Retro City Rampage, covering how the game's core was crunched to run on real 8-bit hardware and how NES games are made.

A 2016 conference talk by a mobile game CEO on the tricks of free-to-play monetization, including player profiles and how to target high-spending whales.

Thai farmer Jon Jandai talks about leaving Bangkok to farm and build his own house, arguing that food, shelter, clothing and medicine are easy to provide and that modern life is made needlessly complicated. He founded the Pun Pun Center for Self-reliance.

CodeParade's short devlog on how spherical geometry looks in 2D and 3D and why it feels so unusual, part of the Hyperbolica series on a non-Euclidean game.

Cindy Gallop gives a 4-minute TED2009 talk arguing hardcore pornography has distorted how young men think about sex. She introduces her website MakeLoveNotPorn as a response.

A timelapse of Notch (Markus Persson) creating his Ludum Dare 21 entry, Prelude of the Chambered, from scratch in 48 hours.

Lucas Pope, creator of Return of the Obra Dinn, explains in Ars Technica's War Stories how localizing the game's logbook nearly sank the project.