1081: The Feedback-Regulated Universe

New channel CITA Presentations: title sample judged 'pick' (Mostly genuine research seminars teaching theoretical astrophysics, but a handful of items are anniversary event recaps,); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.