Regulators say about $1.2 billion is missing from customers' accounts following the collapse of MF Global. Minnesota farmers, ranchers, feed mills and grain elevators are among those customers. Now they're waiting to find out just how much they might be missing.

MF Global is being investigated over what federal regulators say is an estimated $1.2 billion that may be missing from customer accounts.

A thunderstorm collapsed a silo and barn near Colby Thursday, and a farmer working inside was able to slip out with his life, the Marshfield News Herald reports. About 20 dairy cows were trapped in the rubble. The National Weather Service says 70- to 80-mph winds likely did in the structure.

U.S. Sen. Amy Klobuchar and 16 other senators have mailed a letter to the U.S. attorney general urging an investigation into and possibly the criminal prosecution of MF Global executives, who may have made illegal transactions using customer funds. Many of Minnesota's farmers and agricultural businesses have been missing money since the commodities trader collapsed.

U researchers say they've found that if schools adopt recipes that use whole grains in foods like pizzas, pastas and bread -- the change increases a students intake by more than 25 percent.

From surgical robots to farming automation to unmanned aircraft, robotics is spreading across the Midwest. And some technologists think Minnesota is poised to become the industry's regional hub. A conference at the U of M this week will look at how to make that happen.

A 28-year-old man was working on a grain elevator expansion project in Buffalo Lake, Minn., on Saturday morning when he fell about 60 feet and died of his injuries, WCCO reports. Local authorities and the Occupational Safety and Health Administration are investigating the accident.