U.S. soybean derivatives are essentially the only exchange-traded hedging vehicle available to the world soybean market. It works when circumstances allow it to, but there are some potentially severe out-of-position risks involved.We tend to think of the cultivation of soybeans as being relatively new compared to wheat, barley and other grains. However, they have been grown by Chinese farmers since before recorded history. It is actually quite possible that China's soybean cultivation began earlier than the prehistoric production of wheat-like grain as a crop in the Tigris River valley. Soybeans also have a longer history in the U.S. than is generally acknowledged. They were first introduced here in 1765, and a form of soy sauce produced in...