In 1921-1922 naturalist Carl Ethan Akeley used the motion-picture camera he had patented in 1916 to make the first movies of gorillas in their natural habitat in Africa.

In May 1922 George Frost, eighteen-year-old president of the Lane High School Radio Club in Chicago, fitted the first automobile radio to the passenger door of a Ford Model T.

In 1928 pioneer astronomer George Ellery Hale secured a grant from the Rockefeller Foundation to construct an observatory on Mount Palomar for the California Institute of Technology. The telescope at this observatory was larger than the one at Cal Tech's Mount Wilson Observatory, for which Hale had also secured funding and which he directed from 1908 until 1923.

In the 10 July 1920 issue of Scientific American Ralph Howard expounded on the importance of the heat-and-wear-resistant fiber asbestos, detailing its use as a fireproof insulation material for pipes, boilers, automobile spark...