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  1. Phages take breaks while ejecting DNA

    Bacterial viruses, or phages, inject DNA into their prey in a way that is more complicated than researchers had previously thought.

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  2. Earth

    Lightning creates radiation-safe zone

    A relatively safe region within the seas of radiation that surround Earth owes its existence to lightning storms.

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  3. Astronomy

    Moon story waxes fuller

    A new analysis may have put the final piece in the puzzle of how the Moon formed.

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  4. Plants fix genes using copies from ancestors

    Some plants can reinstate genes missing from their own chromosomes but that had been carried by previous generations.