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  1. Health & Medicine

    Daily drug shown effective in preventing HIV infections

    After a history of controversy, preexposure prophylaxis has been demonstrated to work for HIV prevention.

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  2. Animals

    Cat-versus-virus arms race goes back millennia

    Researchers have found evidence of an ancient arms race between Felis silvestris catus, the species familiar today as the domestic cat, and feline immuno­deficiency virus.

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  3. Health & Medicine

    Eating meat officially raises cancer risk

    Eating processed meats like bacon, ham and sausage causes cancer, says the World Health Organization.

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  4. Quantum Physics

    Light mimics hotel with limitless vacancies

    By mimicking a mathematician’s method for creating vacancies in a hotel with an infinite number of rooms, physicists may have found a way of increasing the amount of data that can be carried via light.