Why Today?

公開一時停止中

A 4-minute daily read answering one curious "why" question — from why ice floats to why deadlines work.

Why Today?2026/06/24 12:15:40

Why do we yawn? It is probably not about oxygen

A four-minute explanation of why yawning is probably less about oxygen and more about state changes, brain cooling, and social attention cues.

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