Valve Corporation

The Combine is a multidimensional empire, which serves as the primary antagonistic force in the Half-Life video game series, developed by Valve Corporation.
Valve Corporation is an American video game development and digital distribution company based in Bellevue, Washington, United States.
Half-life (t½) is the amount of time required for a quantity to fall to half its value as measured at the beginning of the time period.
The combine harvester, or simply combine, is a machine that harvests grain crops. The name derives from its combining three separate operations comprising harvesting—reaping, threshing, and winnowing—into a single process. Among the crops harvested with a combine are wheat, oats, rye, barley, corn (maize), soybeans and flax (linseed). The waste straw left behind on the field is the remaining dried stems and leaves of the crop with limited nutrients which is either chopped and spread on the field or baled for feed and bedding for livestock.
Combine harvesters are one of the most economically important labour saving inventions, enabling a small fraction of the population to be engaged in agriculture.
Don’t you just love the internet …