From Chaos to Calm: Remembering the Three Mile Island Crisis, An Interview With Harold Denton

Thursday, March 28, 1979, is a day forever etched in the memory of most Pennsylvanians and, indeed, many Americans. During the pre-dawn hours, events swiftly unfolded at a nuclear power plant on an island in the middle of the Susquehanna River near Harrisburg that would lead to the worst commercial nuclear accident in the nation’s history. In the days that followed, Three Mile Island (TMI)...
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Firm Foundations in Philadelphia: The Lewis and Clark Expedition’s Ties to Pennsylvania

For a century and a half, from 1807 until the early 1960s, the celebrated expedition undertaken by Meriwether Lewis (1774-1809) and William Clark (1770-1838) between 1803 and 1806 was generally perceived to be strictly a western United States phenomenon. Historians and educators who discussed it in their writings or in their teaching usually described the twenty-eight month ordeal as beginning...
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Growing Bigger and Better Year by Year

At noon on Saturday, November 24, 1827, fifty-three prominent Philadelphians gathered at the old Franklin Institute, then located on Seventh Street, in response to a newspaper advertisement calling for the formation of an organization devoted to the “highly instructive and interesting science” of horticulture. Since that inaugural meeting – nearly one hundred and seventy-five...
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