Low flying planes

I took the girls out for a run a couple of weeks ago.  As we turned down the country road, I saw an all too familiar sight.  A crop duster zooming back and forth across the road.  I was careful to make sure that the girls didn't get under the spray.

Crop Duster crosses roadway

Many of the bean farmers around here have their crops sprayed.  I have mixed feelings about it.  I know that it saves time controlling weeds.  But those chemicals drift through the air.  It is obvious that they are careful, flying low when they release to minimize the overspray. But overspray in a part of the process. 

Crop duster sprays soybeans

Then I also wonder about those same chemicals that are getting absorbed into the ground and inevitably into our drinking water.  Advancements are good, aren't they?  It can be difficult to know when changes are really good.