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  1. 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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  2. Health & Medicine

    Juice could ward off cancer in smokers

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

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  3. Earth

    Compost reduces landfill gas

    Field tests suggest that covering solid waste with compost instead of conventional soil could reduce methane-gas emissions from landfills.

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  4. Animals

    Owls use tools: Dung is lure for beetles

    Burrowing owls' habit of bringing mammal dung to their burrows attracts edible beetles and counts as form of tool use.