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  1. 19103

    Your article on microbial-efflux-pump research immediately caused me to relate the phenomenon to immune system response. Have the researchers considered the possibility of such a response triggering the formation of efflux pumps, either specific to the triggering “foreign” body or to a group of bodies similar to the cow pox-small pox link? Robert E. HubbardWinter […]

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  2. Physics

    Scaling energy barriers to save data

    Researchers demonstrate a promising new way to make semiconductor-based memory that doesn't erase when the power goes off.

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  3. Humans

    From the August 13, 1932, issue

    ONLY HALF OF LIGHTNING FLASH IS SEEN BY OBSERVERS Not many years ago, a thunderstorm often meant that the supply of electricity would be interrupted.