Eva Schultheis and her team at RWTH Aachen University caught countless insects on a corn trial field and then identified the species in the laboratory. They wanted to find out whether the insect communities found in genetically modified Bt corn are different from those found in conventional corn. They found differences between the years and between individual corn varieties, but were unable to detect any influence of the genetic modification. Extensive investigations in the laboratory with the rice leaf bug, which was chosen as a representative species, also failed to find any negative Bt corn effects.