'Black cloud': Poor prices, trade woes follow MN farmers to the field

A planter stirs up dust as it buries rows of canola seeds.
A planter stirs up dust as it buries rows of canola seeds near Stephen, Minn. Farmers are rushing to catch up with planting after a late spring, and getting hit with more bad news on Chinese trade tariffs and falling crop prices.
Dan Gunderson | MPR News