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• CuriousTwo molecules can look like mirror images and behave like different drugs.Henri Kagan and Kenso Soai won the 2026 Nobel Prize in Chemistry for work that made it possible to favor one molecular mirror image over another. That matters because biology can treat two nearly identical molecules very differently.
• ExplainedWhat is chirality? Start with your hands, then shrink the idea to a molecule.Chiral molecules come in mirror-image forms that cannot be perfectly superimposed, much like left and right hands. That simple geometric property helps explain why smells, enzymes and medicines can respond differently to molecules with the same formula.