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Civil society shapes COP30 in Belém — Level B2 — a group of people standing around each other
15 Dec 2025

Civil society shapes COP30 in Belém

At COP30 in Belém, organized civil society and Indigenous groups were highly visible in official spaces, parallel events and street actions. The People’s Summit and large marches brought collective demands and influenced debates.

Hair can record chemical exposure — Level B2 — black and white no smoking sign
15 Dec 2025

Hair can record chemical exposure

Researchers at the University of Texas at Austin found that human hair stores a timeline of chemical exposure. By heating intact strands and scanning the released molecules, the team reconstructed past exposures that blood or urine cannot show.

Can AI learn cultural values? — Level B2 — person holding green paper
15 Dec 2025

Can AI learn cultural values?

Researchers at the University of Washington tested whether AI can learn cultural values by watching people. In a game and a donation task, agents trained on Latino data acted more altruistically than agents trained on white data.