Eleanor Roosevelt thanks a chemical engineering firm in Philadelphia for manufacturing water for the king and queen of England on their visit to America.
This video highlights a collection of letters from Eleanor Roosevelt to a chemical engineering firm in Philadelphia—thanking them for manufacturing water for a visit from the king and queen of England.
Historians unmask the villain who killed off New York’s Paleozoic Museum.
Could a century-old aqueduct point the way to Los Angeles’s clean energy future?
The failed promises of Project Plowshare.
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