roots

Soil microbiologist Elaine Ingham speaks at the Oxford Real Farming Conference on how soil organisms cycle nutrients, unlock minerals from rock and air, and why pesticides and fertilizers harm soil life. Slides are linked in the description.

Psychologist Jonathan Haidt presents his moral foundations research in a TED talk. He argues that liberals and conservatives weigh a different set of moral values, which helps explain political divides.

3Blue1Brown presents the Triangle of Power, an alternate notation that unifies powers, logarithms and roots in a single triangular symbol. The video shows how the inverse operations relate and how the notation could help.

A video essay from lawyer-turned-YouTuber Moon Channel on the South Korean gender war, tracing its historical roots and modern origins through the lens of a gacha game controversy. It is the first part of a two-part series.

Steve Blank's Computer History Museum lecture argues that Silicon Valley's roots lie in WWII radar and electronic warfare work, Stanford's Fred Terman and Cold War military funding rather than the semiconductor alone.

Steve Blank tells how World War II, Stanford's Frederick Terman and military and intelligence agencies shaped the rise of Silicon Valley. The talk centers on the Cold War electronic warfare and signals intelligence work that seeded the region's tech industry.

An Al Jazeera investigation into Boeing's 787 Dreamliner, featuring current and former engineers who voice safety concerns. It covers quality control problems at the South Carolina plant and the roots of the battery problems that grounded the plane.

Veritasium explains how trees lift water from roots to the top of tall trunks, using transpiration pull and the negative pressure that liquid water can sustain. It explains why trees do not need pumps or valves.

The first episode of Jason Scott's eight-part BBS documentary, covering the predecessors and beginnings of the dial-up bulletin board system. It includes interviews with pioneers such as Ward Christensen and Randy Suess, who created the first dial-up BBS in 1978.

Frans de Waal's TED talk shows videos of behavioral experiments on primates and other mammals that reveal empathy, cooperation, fairness and reciprocity. He argues these moral traits are not uniquely human.

Investigative journalist Sharyl Attkisson explains how astroturf, fake grassroots campaigns funded by corporate or political interests, manipulates media messages. The TEDx talk is about 11 minutes.

Owen Maitzen's animated hour-long introduction to Hackenbush, a simple combinatorial game, and how its strategy leads to surreal numbers and the roots of the number system.

Aaron Swartz's keynote at Freedom to Connect 2012 describing how ordinary people helped defeat the SOPA censorship bill. He recounts how the Senate unexpectedly united behind the bill and how grassroots action stopped it.

A NeXT, Inc. promotional video showing its highly automated factory and the manufacturing of the NeXT Cube, including automated circuit board assembly.

Cloth Map documents Havana's SNET, a community-built private network that Cubans created because internet prices were high. It is used for gaming and sharing.