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Pages in category "20th-century inventions" The following 126 pages are in this category, out of 126 total. ... Code of Conduct; Developers; Statistics; Cookie statement;
Pages in category "20th-century inventors" The following 30 pages are in this category, out of 30 total. ... Code of Conduct; Developers; Statistics; Cookie statement;
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
Pages in category "20th-century American inventors" The following 200 pages are in this category, out of approximately 1,332 total. This list may not reflect recent changes .
Heron (c. 10–70), Roman Egypt – usually credited with invention of the aeolipile, although it may have been described a century earlier John Herschel (1792–1871), UK – photographic fixer (hypo), actinometer
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
5. Play-Doh. Who: Kay Zufall, Brian, Joseph McVicker, Bill Rhodenbaugh When: 1956 . How it was created: The gooey toy kids have been playing with for decades began as a household cleaning product ...
Download QR code; Wikidata item; Print/export Download as PDF; Printable version; ... 20th-century inventions (2 C, 119 P) 21st-century inventions (1 C, 21 P)