A federal judge has invalidated a ban on the cultivation of genetically modified crops passed by voters in Maui County, Hawaii. Passed in November, the ballot measure called for a complete suspension on GMO crop cultivation until studies prove it is safe. Maui County is often called ”GMO Ground Zero” because multinational seed producers test products there. Both Monsanto and Dow filed suit against the ban, and on Tuesday a judge ruled Maui County lacked the authority to impose it. Critics of GMOs say they will appeal.