생체시계의 60년 난제 수학으로 풀어낸 본인 등판! 온도와 생체시계의 비밀은?! 수학의 쓸모2 2부! (KAIST/IBS 김재경 교수)

Picked video by video from 안될과학 Unrealscience (mixed channel): title plainly names a teaching subject. Channel transcript sample: One sample is a genuine (if chatty) science experiment explainer, while the others are sponsored content or talk-show format without verifiable teaching transcripts, consistent with the channel's mixed pick status.