again, context. it is not even remotely comparable to say, even rice farming in the sacramento delta.
how many thousands of acres get sprayed with roundup each year to keep people's driveways weed-free and barren? where does the water go that drains from those driveways and lawns, delivering weed&feed and pesticides to the system? one city's output would dwarf the total runoff from marijuana production.
the articles pick on marijuana production when it disturbs about 1% of the amount of land that vineyards do. Maybe wine should be made illegal if one really wanted to make a dent in environmental degradation.
It doesn't make it good, but it is misplaced anger and sabre rattling. If it were legal, the cartels would be run out, and they do the most of any actual serious damage, bar none.
But growing an agricultural crop on land that used to be in a natural state is nothing new.. it sort of brought on civilization. ;)