The herbicide is suspected of drifting in the wind to neighboring farms and causing widespread damage.
Wildfires can be started by neglected campfires or cigarette butts. They can ignite from prescribed burns run amok or launch from lightning strikes.
The USDA set aside $6 million in aid to help farmers and ranchers affected by the fires.
This season's storms aren't a fluke. They're one consequence of a century long pattern in which the Midwest has gotten as much as two degrees warmer.
It’s spring along the Missouri River in Nebraska, Iowa, Missouri and Kansas, and farmers are back on the land, trying to fix what nature broke.
Flooding, drought and extreme weather have taken their toll on the nation's crops, but the damage may not be as bad as we think.