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  1. Tech

    Laser Landmark: Silicon device spans technology gap

    By coaxing a silicon microstructure into acting as a laser, engineers have achieved a long-sought and important step toward microchips capable of simultaneously manipulating electrons and light.

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  2. Earth

    Lemon-scented products spawn pollutants

    Some fragrances used in home-care products can play a role in generating potentially harmful air pollution.

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  3. 19475

    Along with everyone else, I’ve been fired up by the amazing discovery of Homo floresiensis. Clearly, our preconceptions about brain size and intelligence, reasonably achieved by the evidence we had, must now be discarded. Oriole Parker-RhodesAnglesey, Wales

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  4. Anthropology

    Evolutionary Shrinkage: Stone Age Homo find offers small surprise

    Scientists announced the discovery of the partial skeleton of a small-bodied Homo species that inhabited an eastern Indonesian island from at least 38,000 years ago until about 18,000 years ago.