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About the cover: Polymer rods embedded with cadmium selenide nanocrystals, fluorescing at various wavelengths (M. Bawendi et al.; photograph by Felice Frankel -copyright reserved). This photograph suggests the broad societal implications of nanoscience and nanotechnology.doi:10.1111/an.19126.96.36.199.4 fatcat:w2qp76pvhvfvdfzz2opq2lr7ba