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Abigail Hallowes
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Traffic light label indicates food freshness
Ammonia gas diffusion basis for inexpensive colour-changing food freshness label
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Flow chemistry for on-demand chlorine
Simple and safe setup produces elemental chlorine when and where it’s needed
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Water gets the mille-feuille treatment
Puff pastry-style filter paper is crème de la crème of virus filtration
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A year of water splitting from one device
Coating protects electrodes from corrosion to keep photoelectrochemical cell running