"For 40 years, farmer Todd Leake and his family have battled bitter cold, hungry pests and a short growing season to coax soybeans out of their fields in eastern North Dakota.
The one thing they never had to fight for, though, was their seeds.
A decade ago, salesmen from as many as 50 seed companies would compete for their dollars. Each would promise healthier plants, richer yields or a better discount.
Today the Leakes have little choice: There are four seed companies in their area, and all sell seeds that include genetic traits patented and licensed by Monsanto Co., the world's largest seed firm."