Community organizer Raj Jayadev wants to transform the US court system through "participatory defense" -- a growing movement that empowers families and community members to impact their loved ones' court cases. He shares the remarkable results of their work -- including more than 4,000 years of "time saved" from incarceration -- and shows how this new model could shift the landscape of power in the courts.

The attacking infantry advances, their elephants already having broken the defensive line. The king tries to retreat, but the enemy flanks him from the rear. Escape is impossible. This isn't a real war— nor is it just a game. Over the 1,500 years of its existence, chess has been known as a military strategy tool, a metaphor for human affairs and a measure of genius. Alex Gendler shares its history. [Directed by Remus & Kiki, narrated by Adrian Dannatt, music by Stephen LaRosa].

Rising inequality and growing political instability are the direct result of decades of bad economic theory, says entrepreneur Nick Hanauer. In a visionary talk, he dismantles the mantra that "greed is good" -- an idea he describes as not only morally corrosive, but also scientifically wrong -- and lays out a new theory of economics powered by reciprocity and cooperation.

Consider the spot where you're sitting. Travel backwards in time and it might've been submerged at the bottom of a shallow sea, buried under miles of rock or floating through a molten landscape. But go back about 4.6 billion years, and you'd be in the middle of an enormous cloud of dust and gas orbiting a newborn star. What exactly is this cosmic dust? Lorin Matthews investigates. [Directed by Frederic Siegel (Team Tumult), narrated by Addison Anderson, music by Alon Peretz].

Vape Store Owner Drives 500 Miles To Speak About Michigan's Vape Ban! "Vapes Are Saving Lives"

This animation is part of the TED-Ed series, "There's a Poem for That," which features animated interpretations of poems both old and new that give language to some of life's biggest feelings. [Poem by Clint Smith, directed by Niv Sekar, music by Stephen LaRosa].

When we define racism as behaviors instead of feelings, we can measure it -- and transform it from an impossible problem into a solvable one, says justice scientist Phillip Atiba Goff. In an actionable talk, he shares his work at the Center for Policing Equity, an organization that helps police departments diagnose and track racial gaps in policing in order to eliminate them. Learn more about their data-driven approach -- and how you can get involved with the work that still needs to be done. (This ambitious plan is part of the Audacious Project, TED's initiative to inspire and fund global change.)

Hong Kong Anti-Government Protestors Attack Government Supporter

Hong Kongers Saving Others From Police Arrest

A unique solid gold toilet that was part of an art exhibit was stolen early Saturday from the magnificent home in England where British wartime leader Winston Churchill was born. The toilet, valued at roughly 1.8 million pounds ($1.25 million), was the work of Italian artist Maurizio Cattelan. It had been installed only two days earlier at Blenheim Palace, west of London.