I drive all over America in my job as a trucker. When I am in the Midwest and sometimes in the South, I frequently see large fields of soybeans grown over many, many acres. Soybeans growing appears to be a fairly large industry. I also know that people frequently trade large quantities of Soybean Futures in the Commodity Exchange markets. I presume that soybeans are used to make soy sauce (just because of the name), but soybean growing & soybean commodity exchange trading cannot be that gigantic of an industry just for soybeans used to make soy sauce. Soybeans must be used in other applications. Perhaps soybeans are used in industry to help make some other type of produce (as corn is used to make ethanol, for instance). What are soybeans used for other than soy sauce?