More than anything else, a Labor Department announcement two weeks ago has fueled concern that economic growth might be accelerating.
Fueling concern, he said, was the rise in dinosaur-extinction studies and asteroid surveys.
Recent reports have shown surprising economic strength, fueling concerns about inflationary pressures.
Wholesale prices have risen 28 percent during the past year, helping farmers but fueling concerns about inflation.
The gold price rise fueled concern that inflation would accelerate and the Fed would raise rates again.
Analysts had been expecting a decline of about 2.2 percent, and the much larger drop fueled concerns that the United States economy was weakening significantly.
The cases are fueling mounting concerns about the quality and safety of China's food and drug exports and threatening to turn into a trade dispute.
The damage dealt to the agricultural sector of Antigua and Barbuda fueled major concerns for "food security" in 2009.
The Saudi presence also fueled concerns of further strife over the Sunni-Shia divide.
Stocks plunged yesterday on a report that showed that manufacturing remained quite weak, fueling concerns about the already sluggish economic recovery.