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  1. Chemistry

    Meteorites may have delivered phosphorus

    Meteorites may have supplied enough phosphorus to prebiotic Earth to spawn the first signs of life.

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  2. Physics

    Gold quantum dots

    Scientists have created a new type of quantum dot that could find applications in everything from biological imaging to computer displays.

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  3. Chemistry

    Molecular machines split water

    Hydrogen derived from molecular machines that use solar energy to split water, rather than hydrogen from fossil fuels, could drive future fuel cell vehicles.

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  4. Health & Medicine

    Juice could ward off cancer in smokers

    Drinking grapefruit juice every day could reduce the risk of developing cancer from smoking.