FULTON COUNTY, OHIO, Ohio — As long as humans have grown crops, they’ve used manure to help them flourish. Rich in phosphorus, it’s a natural fertilizer that’s been a staple on farms for generations.

Dairy farms are often portrayed as quaint and bucolic. But on the ground, the dairy industry is among the most hazardous to work in — the combination of heavy machinery, thousands of large animals, ...

A malfunction at an Ohio hog farm caused liquid fertilizer from a manure lagoon to spill into Poverty Run, turning the creek red. The Ohio EPA is overseeing the cleanup of the creek, which is not a ...