Boston University News Service – In the summer of 2012, during the worst drought in twenty years, Danforth, Illinois, went for six weeks without rain but the corn in Hoekstra Farm grew tall and green. The corn in the neighboring fields was almost a foot shorter. While farmers across the Corn Belt watched their crops shrivel and die, Harold Wilken of Hoekstra Farm made enough money from his crops that summer to pay a bonus rent to his landowner.