http://www.npr.org/templates/story/story.php?storyId=1029447...
/rant
Meanwhile all aspects of food and water, both of which are a fundamental human need, has been heavily commoditised and abstracted out of our view all the way to reductio ad absurdum levels in modern discourse. It is going to take several unmitigated disasters before nuanced views around this topic will even gain traction.
/rant