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Science & Society Snippets of hair may expose chronic stress in war refugees Cortisol in hair shows sharper differences in chronic stress among Ukraine war refugees than standard questionnaires.

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Apr 28, 2025 · As calls to end fluoride in water get louder, changes to the dental health of children in Calgary, Canada, and Juneau, Alaska, may provide a cautionary tale.

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Apr 24, 2025 · Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.

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