When Darrell Harden learned about it, he knew there was a way he could bank on his big idea to create Moo-trients Composted Cow Manure. “With the dairy comes lots of manure,” Harden explained.

Butler Tech students are learning a lot from a load of horse crap piling up here at the green engineering program.

While organic dairy farmers have relied on hen manure from the facility as a more economical way to fertilize their crops, ...