An evolutionary biologist explains two common human biological responses: tanning and cavities. Tanning is an emergency reaction to UV damage, involving DNA triggering melanin production, though it offers minimal protection. Cavities, the most prevalent health issue globally, are linked to modern human practices like farming and sugar consumption, exacerbated by oral bacteria. AI
RANK_REASON The cluster consists of two articles from the same author explaining biological phenomena, which falls under commentary rather than a core AI or significant industry event.
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