tether

Coffeezilla gives a comprehensive history of Tether, the stablecoin issued by a company controlled by the owners of Bitfinex. He lays out accusations that it is not fully backed.

A CNBC interview in which Deirdre Bosa talks with Tether's CTO and general counsel about the company's role in crypto and the future of stablecoins.

Kurzgesagt explains the skyhook, a rotating cable with a counterweight that could catapult spacecraft from Earth orbit toward deep space. It covers why it would make space travel cheaper and more efficient.

Jake Thackray performs the folk song Molly Metcalfe, which opens with an explanation of the traditional northern English sheep-counting system (yan, tan, tethera). It is a short, witty piece of British folk songwriting.