BROAD SELL-OFF: Commodity prices fell broadly on concerns about Europe's ability to control its debt crisis and China's slowdown. Oil, copper, palladium, cotton and coffee hit the lowest level in at least a year, if not longer.

FUTURE DEMAND: Investors worry that demand for commodities will decline because of uncertainty about Europe's next steps and slower growth in China, which is a huge importer of commodities. Many sold commodities to buy more stable assets such as the dollar and Treasurys.

WINNERS, LOSERS: Prices fell for gold, silver, industrial metals, oil, wheat and soybeans. Corn and natural gas rose.