Factory farms in Iowa generate 110 billion pounds of manure per year. No one tracks where it’s going: Manure management planning could prevent fertilizer pollution. But an antiquated system isn’t doing enough to track manure

Factory farms in Iowa generate 110 billion pounds of manure per year. No one tracks where it’s going: Manure management planning could prevent fertilizer pollution. But an antiquated system isn’t doing enough to track manure

Source: lnfinity