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.
Modern agricultural practices are unsustainable. Is tree farming the answer?
The Bronx Zoo’s strange obsession with an even stranger bird.
How the investigation into a grisly murder shocked 19th-century France and framed the scientist as an accomplice.
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