Apr 05 2026SCIENCE
Blue Light, Fresh Ideas: A Plant‑Made Tool for Spotting Antibiotics and Fending Off Fake Goods
Hydrangea flowers are turned into tiny, glowing dots that shine blue under UV light. The dots contain nitrogen and emit bright light when exposed to 365‑nanometer radiation, but they fade quickly – within half an hour. This rapid loss of glow makes them useful as a “single‑use” security mark that ca
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