Manure expo coming to London - 5:14 pm updated:

The international event, covering the serious business of using farm animal manure to help grow crops, while doing it safely and greenly, is Aug. 3-4 at the Molly Caren Agricultural Center in London, about 25 miles west of Columbus. The expo travels around different locations every year, and typically attracts a couple thousand attendees, said Mary Griffith, educator with Madison County Extension.