Harvard College Observatory
By Dimitrios Sakellariou
26 Feb
World’s Tallest Buildings
By James White
07 Nov
Bell Telephone Laboratories: Manhattan, NYC
By Jared Keller Every day thousands of New Yorkers pass by 463 West Street in Manhattan – head down, texting their
03 Oct
The battlefields of Gettysburg, Pennsylvania
By Courtney Gordner Gettysburg, Pennsylvania is perhaps best known as the site of the bloodiest battles in the American Civil
19 Sep
Eastern State Penitentiary, Philadelphia, Pennsylvania
By Deanna Day Eastern State Penitentiary, 1829-1971 After the last prisoners left Eastern State Penitentiary in 1971, the
19 Jun
Wagner Free Institute of Science, Philadelphia
By Robert G W Anderson The Wagner Free Institute of Science has its origins in the adult education movement which had started
29 May
Chemical Heritage Foundation Museum, Philadelphia
By Robert G W Anderson The Chemical Heritage Foundation has evolved from the Center for the History of Chemistry which was
15 May
The Barnes Foundation, Philadelphia
By Robert G W Anderson The Barnes Foundation was established in 1922 by Albert C Barnes (1872-1951), an eccentric chemist
26 Apr
McMillan Sand Filtration Site, Washington, D.C.
By Thad Parsons Are you looking for something off the tourist track? What about something that at first sight makes little
22 Mar
American Philosophical Society, Philadelphia
By Charles B. Greifenstein The full official name of the Society is the American Philosophical Society, Held at Philadelphia
18 Mar