A label on a bag of popcorn indicates it is a non-GMO food product, in Los Angeles, California,  October 19, 2012.  California could become the first US state to enforce labeling of genetically modified foodstuffs also know as GMO's, in a vote next month pitting agro-chemical manufacturing giants against die-hard opponents of so-called "frankenfoods."  The state will vote on November 6 – the same day as the White House election – on the ballot initiative, which backers claim will let consumers know exactly what they are eating, but critics say will pander to unjustified fears about genetic engineering. AFP PHOTO / ROBYN BECK        (Photo credit should read ROBYN BECK/AFP/Getty Images)