Este es el elemento más denso posible

Whole-channel inclusion: CienciaDeSofa is an honest teaching channel (title sample + 3 transcripts read: All three samples lack transcripts, so the channel verdict defaults to the prior title-sample assessment of consistent science popularization content.); this title passed a strict title check (sonnet) after a labelling pass.

A 14-minute video from CienciaDeSofa: “Este es el elemento más denso posible”.

Video by CienciaDeSofa, played through YouTube's embedded player.