resource preservation

I was recently reading a letter to the editor in The Wall Street Journal where the reader blasted ag biotech companies like Dow Chemical and Monsanto for creating “superweeds”.  Monsanto transformed crop farming with the development of Roundup herbicide, which kills practically anything with roots but is otherwise quite benign (oxymoron alert).  They later developed genetically modified seeds for plants that are immune to the weed killer.  But weeds, like bacteria, have morphed to become immune to Roundup.  The letter goes on to compare the superweeds to antibiotic–resistant organisms.  Except, nobody is going to be killed by a superweed.  So…