Remember Agent Orange? The US Army sprayed it all over Vietnam. It defoliated (destroyed) plant growth and brought on cancers and birth defects.
One of its significant ingredients was a chemical called 2.4-D.
Well, the US Dept. of Agriculture has cleared the way for brand new Dow GMO corn and soy crops. They are engineered to withstand spraying with 2,4-D.
The theory is, the corn and soy will survive, but pesky weeds will die.
Of course, the drifting spray of 2,4-D will kill all sorts of other plants, including fruit trees.
And there is that species called Human. Have a little lymphoma with your corn chowder.