War II. Rehabilitation engineering in the United States had its roots following World War II in activities of the National Academy of Sciences (NAS) that were initiated by the U.S. Army and the Veterans Administration (VA).
Perhaps the single greatest contribution Linnaeus made to science was his method of naming species. This method, called binomial nomenclature, gives each species a unique, two-word Latin name consisting of the genus name and the species name. An example is Homo sapiens, the two-word Latin name for humans.
As he studied plants and how they were named, Linnaeus became unhappy with how other scientists had grouped or classified them. He created a new system based on the parts of flowers, the reproductive structures of plants. He also used a new naming system that gave two names to each plant.