Farmers have to deal with threats to their crops from nature all the time. Thousands of Kansans, though, argue that Syngenta AG posed an even bigger threat by failing to prevent its genetically modified corn seed from contaminating U.S. crops, which led to a devastating rejection of imports by Chinese officials. More than 7,000 Kansas farmers are going to trial Monday (June 5) to convince a jury the agricultural giant rushed the genetically engineered seed to market before getting import approval from China, which then stopped shipments saying the corn had been contaminated.