I am fascinated by the concept of urban agriculture. The idea of food production in an urban setting is cool.
I am also fascinated but I don't like GM food
What concerns you most about GM foods?  Is it that they have had changes made on their DNA, or something?
GM foods causes cancer and other health challenges 
I didn't realize that any link to cancer or other health issues had ever been proven.  To me, genetic modification is just a natural outgrowth of previous efforts with selective breeding.