1.   After it was discovered by the rest of the world, corn became the third largest crop, after wheat and rice.

2.   After recent sharp price declines, U.S. corn has become more competitive on the world market, increasing export demand.

3.   Candy corn quickly became a popular treat, especially during Halloween.

4.   Genetically engineered corn has become very popular among American farmers.

5.   The biotech corn became especially controversial last year after a Cornell University study suggested it could be killing Monarch butterflies.

6.   The StarLink corn has become an embarrassment to the biotech industry, and food manufacturers have been meeting almost daily with government officials to deal with the issue.

7.   The StarLink corn has become an embarrassment to the biotech industry and food manufacturers, who have been fighting consumer resistance in Europe and Japan to genetically engineered crops.