Our food supply will be safer than ever, as nanomaterials in food packaging will maintain freshness for an extended time, and printed sensors will alert consumers if bacterial activity is detected. Food packages will contain nanotech membranes to reduce oxygen entry and loss of moisture, and will incorporate nanoparticles that inhibit the growth of bacteria. Moreover, printed nanosensors in packaging will alert the consumer if foods contain traces of dangerous bacteria such as E. coli, salmonella, and listeria, or the presence of chemical contaminants.