What do people use to make fruits and veggies look fresher?

Some fruits and vegetables contain foreign genes inserted into their genome. These genes can allow the fruits and vegetables to ripen slower, giving them a longer shelf life.

Some tomatoes are sprayed with a chemical called ethylene oxide, this chemical induces the tomatoes to turn the red color we know them as at a faster rate. This means farmers an pick their tomatoes when they are green and ethylene oxide will take care of the ripening business.