¿Hemos entrado ya en un nuevo periodo de la Historia de la Tierra?....

Picked from a mixed channel: Real Academia de Ciencias Exactas Físicas Naturales (title sample: Mostly substantive academic lectures and research talks, but mixed with institutional ceremonies, award presentations, toma de posesión events, and short promotional clips that don't meet the teaching bar.; 2 of 3 sampled transcripts read as real teaching); this title passed a strict title check.

A 59-minute video from Real Academia de Ciencias Exactas Físicas Naturales: “¿Hemos entrado ya en un nuevo periodo de la Historia de la Tierra?....”.

Video by Real Academia de Ciencias Exactas Físicas Naturales, played through YouTube's embedded player.