mass incarceration

Veritasium explains that the Higgs boson accounts for only a small fraction of everyday mass. Most of a proton's mass comes from the energy of the gluon field binding its quarks.

A two-minute explanation of what a rocket mass heater is, starting from how a conventional wood stove works and why creosote and chimney fires occur. It shows how burning hot and storing the heat in thermal mass makes for an efficient heater.

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.

Ben Krasnow of Applied Science builds and operates a simple mass spectrometer, using it to measure potassium isotopes in a salt substitute. He explains the design choices and the theory behind it.

Veritasium asks people where a tree's mass comes from, then explains that most of a dry tree's mass originates from carbon dioxide in the air. It combines street interviews with a short explanation of photosynthesis.

Official trailer for Eugene Jarecki's 2012 documentary The House I Live In, an investigative look at America's war on drugs and its effect on the criminal justice system. It won the Grand Jury Prize at Sundance.

Ava DuVernay's Oscar-nominated documentary on how the history of racial inequality in the US, from slavery through the 13th Amendment's exception clause, drives mass incarceration. It combines archival footage with testimony from activists and scholars.

A short Al Jazeera animation narrated by Amy Goodman presenting Noam Chomsky's five filters of the mass media: ownership, advertising, media elite sourcing, flak and a common enemy. It is part of the MediaTheorised series.

A DEF CON 22 panel with Rob Graham, Paul McMillan and Dan Tentler on the quirks of scanning the entire internet with masscan. They discuss how fast IPv4 can be scanned and what the results reveal.

A clip from Charlie Brooker's Newswipe in which a forensic psychiatrist argues that intense news coverage of school shooters encourages copycat attacks, alongside Brooker's satire of formulaic news reporting.

Stanford physicist Leonard Susskind explains what the Higgs mechanism is and what it means to give mass to particles. He also covers what is at stake for physics and cosmology.

Rhonda Patrick interviews Salk Institute researcher Satchidananda Panda about circadian rhythms and the timing of food. They cover time-restricted feeding and its links to obesity, muscle mass, heart health, and light exposure.

Tourist footage of the 660-ton tuned mass damper in Taipei 101 swaying during tremors from the 2008 Sichuan earthquake. The damper hangs from the 92nd floor.

A PBS Space Time episode on how the Higgs mechanism gives particles mass, prompted by Fermilab's heavier-than-expected W boson measurement. It goes beyond the usual pop-science treatment without heavy math.

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.

Psychologist Robert Epstein presents a Stanford EE380 colloquium on how internet algorithms such as search rankings can manipulate opinions, purchases and votes at massive scale. He also describes a new monitoring system for tracking such influence.

Hyrum Wright shares lessons from five years of mass code migrations in Google's huge C++ codebase. He covers why to migrate, how hard it really is, and how Google updates core libraries and their users continually.

Arend Schwab demonstrates a research bicycle, the two-mass-skate design, that balances itself without gyroscopic effects or trail. It challenges the common explanations for why a moving bicycle stays upright.

A PyData London 2018 talk on how JPMorgan scaled its Athena Python platform over ten years to about 35 million lines of code and thousands of developers. It covers infrastructure, tooling and culture for analytics and visualization at that scale.

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.

John Oliver interviews Edward Snowden about NSA surveillance, including street interviews showing people have not thought about what the government can see. The segment famously frames the issue through private photos.

Fools & Dreamers is a 30-minute documentary about Hinewai Nature Reserve in New Zealand, where botanist Hugh Wilson let gorse grow as a nurse canopy to regenerate native forest. It shows the results after 30 years and the local skepticism he faced.

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.

Sandy Munro interviews Elon Musk at Boca Chica about Tesla production, mega-castings, seats, structural battery packs and the difficulty of mass production.

Wendover Productions explains how the US military moves people and materiel worldwide, including prepositioned equipment, sealift and airlift. It shows the scale of the logistics system behind US force projection.

Builders Matt Risinger and Jordan Smith visit a Swiss cross-laminated timber factory that makes thick all-wood walls with no traditional insulation and wooden nails instead of glue or chemicals. The video is sponsored by Siga.

Minutephysics compares how efficiently different processes convert mass to energy per E=mc^2, from fire and fission to fusion, antimatter and black holes, which can convert a large fraction of mass to energy.

Insider Food visits the Gurudwara Bangla Sahib temple in New Delhi, which feeds tens of thousands of people free daily and over 100,000 on holidays. It shows the machines and big-batch cooking that make this possible.

A short unscientific fire test comparing a massive timber house with an ordinary house. It shows the wood chars and burns slowly while still holding together.

A DEFCON 20 panel with NSA whistleblower William Binney, journalist James Bamford and ACLU lawyers on the NSA's mass collection of communications and its conflict with the Constitution.

Ben Krasnow of Applied Science builds a DIY microbalance from an analog panel meter with an optical servo loop. It reaches about 5 micrograms of precision and is used to weigh a single eyelash at around 35 micrograms.

Eric Weinstein interviews economist Timur Kuran on The Portal about preference falsification and how societies where people hide their real views can tip into revolutions.

Louis Rossmann reacts to lobbyist ads in the Massachusetts right-to-repair ballot fight that suggest repair access would enable domestic abuse and discrimination, and urges support for the campaign.

LabCoatz uses mass spectrometry, with help from other science YouTubers, to reverse engineer the Coca-Cola flavor and builds a chemically-identical replica. The video walks through a year of work on the formula.

BBC Newsnight's exclusive interview with journalist Glenn Greenwald about Edward Snowden, the PRISM revelations, and mass surveillance by the NSA and GCHQ.

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.

Santa Clara County District Attorney Jeff Rosen explains in a TEDx talk why Germany has lower crime and far fewer prisoners than the US, and what American criminal justice could learn from German prisons.

Senator Ron Wyden asks DNI James Clapper in a March 2013 Senate hearing whether the NSA collects data on millions of Americans, and Clapper answers 'No, sir... not wittingly.' The question became notable after the Snowden revelations later that year.

A short clip about DARPA's ARGUS-IS, a 1.8 gigapixel wide-area camera array flown on a Boeing unmanned helicopter. It produces a huge mosaic video that can watch a city-sized area from 20,000 feet.

A time-lapse from ESO's Very Large Telescope showing stars orbiting the supermassive black hole at the Milky Way's center over nearly 20 years.