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A short tour of a UK materials recycling facility showing how mixed recyclables are mechanically and optically sorted. Aluminum, ferrous metal, glass, paper, and trash come out as separate streams.

A 2007 Channel 4 documentary by Martin Durkin arguing that human-caused global warming is overstated or a scam. It features contrarian scientists such as Richard Lindzen and promotes sunspot and cosmic-ray explanations for temperature change. Its claims are rejected by mainstream climate science.

A 1978 documentary hosted by Leonard Nimoy about the coming ice age, reposted with a framing that contrasts it with today's climate science.

A CBS News (60 Minutes) profile of free solo climber Alex Honnold, who scales sheer rock faces without ropes. Lara Logan reports on his climbing and his apparent lack of fear, including his Half Dome ascent.

A short film of Alex Honnold free soloing El Sendero Luminoso, a 2,500-foot route in El Potrero Chico, Mexico, in a little over three hours with no rope. It was made by The North Face with climbing footage and music.

Footage from the Chasing Ice project of the largest glacier calving event ever filmed, at Greenland's Ilulissat Glacier in 2008. A 75-minute event is condensed to a few minutes of cameras watching ice collapse.

Streetfilms shows how Utrecht reduced car traffic in its center by removing roadways, building huge bike parking near the train station, and making cycling transitions safer and easier.

The first episode of Clickspring's series on reproducing the Antikythera Mechanism by hand, laying out the plan and the history. The series follows a machinist building the ancient Greek device with traditional tools and methods.

A /noclip documentary on GOG, covering how it finds and re-releases classic games and pushes DRM-free releases. It also touches on the company's origins in Poland.

The trailer for Peter Jackson's They Shall Not Grow Old, a WWI documentary built from restored, colorized archival footage and BBC interviews with British soldiers.

A short film from Agenda Gotsch introducing syntropic agriculture and Ernst Gotsch's agroforestry methods, made for COP21. It shows degraded land regenerated into productive forest farms.

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.

A KQED Truly CA documentary narrated by John Waters about the Salton Sea, a once-glamorous California vacation spot now home to an eccentric community. It covers the area's economic, political and environmental problems and features Salvation Mountain.

Kirsten Dirksen visits retired mailman Russ Finch in Alliance, Nebraska, who grows oranges, figs and pomegranates in a backyard greenhouse without paying for heat. The greenhouse uses the stable temperature of the earth, with underground earth tubes, to heat and cool itself.

Geoff Lawton documents a permaculture project that turned barren Jordanian desert into green, productive land. It covers the techniques he used.

An 8-minute National Geographic short film about David Bamberger, who bought 5,500 overgrazed acres in the Texas Hill Country and restored the land and its aquifers over about 50 years.

A 1996 documentary on the twentieth-century American decline of public transport and the role of car companies and the highway lobby in it. It is best known for its account of GM's streetcar buyouts.

A short documentary clip of Japanese railway workers and Toyota staff using pointing-and-calling, a safety practice of physically pointing at and naming things while working. It includes examples from several railway companies.

Josef Holzer walks through his family's Krameterhof, one of Europe's oldest permaculture farms in the Austrian mountains, with fish ponds, terraces, fruit trees and grazing animals. It showcases water management and microclimates.

Micro Men is a 2009 BBC comic drama about the early 1980s British home computer boom. It follows the rivalry between Clive Sinclair and Acorn founder Chris Curry over the BBC Micro contract and the ZX Spectrum.

Neil Halloran's animated, data-driven documentary visualizes the human cost of World War II and compares it with other wars and the trend toward fewer war deaths in recent decades.

A WGBH/NOVA re-enactment of Clifford Stoll's hunt for KGB-linked hacker Markus Hess, based on his book The Cuckoo's Egg. It starts from a 75-cent accounting discrepancy at Lawrence Berkeley Laboratory.

The 1990 NOVA documentary follows astronomer Clifford Stoll as he tracks a hacker through military and research computer networks, a story that involved the CIA and KGB. It is based on The Cuckoo's Egg.

Fred Dibnah, the English steeplejack, shows how ladders are fixed up the outside of a tall brick mill chimney. The footage was filmed in the mid-1990s and is part one of two.

A documentary on Clive Wearing, a renowned musician whose brain was damaged by a virus in 1985, leaving him with a memory spanning only about seven seconds. It follows his life and condition.

Dominion 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.

ReasonTV tells the story of Bob Tillman, who spent nearly five years and $1.4 million trying to convert his San Francisco laundromat into apartments. It walks through the permitting, appeals and neighborhood opposition he faced.

Chai Jing's 104-minute documentary on China's smog, with full English subtitles. A former TV anchor, she investigates what smog is, where it comes from and what can be done, prompted by her daughter's health problems.

Channel 4's George Clarke visits a council estate in Vienna and is surprised by amenities such as swimming pools and private TV channels. It showcases Vienna's high-quality social housing.

Part one of a 1996 BBC Modern Times documentary on the training to become a London black cab driver. It follows candidates learning the Knowledge and facing stressful repeated exams with Public Carriage Office examiners.

Brian Springer's documentary Spin, built entirely from unauthorized satellite feeds of politicians and newscasters before they went on air during the 1992 US presidential election. It exposes the behind-the-scenes construction of media reality.

A short documentary about Eric Maundu's Arduino-controlled aquaponics setup in West Oakland, where contaminated soil rules out ordinary farming. Fish and circulating water grow plants without soil.

A Motherboard documentary episode from Nebraska about farmers and mechanics fighting manufacturers like John Deere over access to the diagnostic software needed to repair modern tractors. It shows how software locks have taken away farmers' traditional self-reliance.

Kirsten Dirksen visits the Providence Arcade, the oldest US indoor mall, which was converted into 225-square-foot micro-lofts classified as a rooming house.

A VPRO documentary following ecologist and cameraman John D. Liu. He documents the regreening of China's Loess Plateau and other efforts to restore deserts and biodiversity around the world.

A documentary on the 1972 Club of Rome study Limits to Growth, which questioned the pursuit of endless economic growth. It covers the study's findings and whether anyone acted on them.

A half-hour television special on the 2007 fiery collapse of a connector in the Bay Area's MacArthur Maze and its rebuilding in 26 days. It was produced for the Professional Engineers in California Government.

Richard Ankrom's account of his 2001 guerrilla project, in which he painted and installed a missing freeway exit sign on a Pasadena freeway. The sign matched official standards and stayed up for years before being discovered.

A 39-minute BBC documentary, built from earlier British Transport Films footage, on how the London Underground's Victoria Line was dug in the 1960s.

A short documentary about Jadav Payeng, who since the 1970s has planted a forest larger than Central Park on India's Majuli island, turning barren land into a lush oasis.