PSW is the oldest scientific society in Washington, DC, founded in 1871 by Joseph Henry of the Smithsonian Institution and other leading scientists.   The Society invites prominent scientists from the United States and abroad to present the latest scientific research.  Meetings are generally held every other Friday evening from September to May in the Powell Auditorium, adjacent to the Cosmos Club in downtown Washington.

There is no admission charge for the lectures.  Dues-paid members of the Society also have the opportunity to attend pre-meeting dinners with the speakers.  Apply for membership at PSW's website:

Videos of select past lectures.

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The Oldest Scientific Society in Washington, Founded 1871

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  • PSW founded PSW - Science, Engineering, Genetics, Astronomy, and more

    on May 15

PSW - Science, Engineering, Genetics, Astronomy, and more
Founded May 15, 2012

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