New Study Maps U.S. Cattle and Hog Feeding Operations — and Reveals Health Risks

The United States is home to 15,000 cattle and hog feeding operations, responsible for 70% of the nation’s cattle and 98% of its hogs. Thanks to new research from the University of Michigan’s School for Environment and Sustainability (SEAS), we now have a clearer picture of where these operations are concentrated—and what that means for public health.