Illinois corn farmers were celebrating Thanksgiving with record yields and prices. The state's rich earth has been good to us, especially the one million acres planted in corn. Congratulations would be in order were it not for a very, very, dark side to this story. The headline should read, "The Golden Earth is becoming scorched earth." It's been suggested for years that over-application of nitrogen fertilizer, while delivering high yields, is actually destroying the soil that gives us our food....