More of the birds have moved into Indiana in recent years, but Purdue researchers aren't sure why.

The rules made it harder for farmers to put large amounts of antibiotics in livestock feed or water without going through a veterinarian.

On the surface, this doesn't change much. Since the rule was on hold, farmers weren't required to report their emissions.

A legislative study committee is studying large-scale animal agriculture this summer.

An organization of crop and livestock farmers says that's good news for Indiana's economy, but some Hoosiers say the consequences outweigh the benefits.