You are right, there is a lot to be discussed about GMO's and ways that they are used. You could make a pretty interesting post just talking about Tide laundry detergent and the various enzymes they add to it.

http://www.hindawi.com/journals/archaea/2015/147671/

Many of those enzymes come from Archaea, which is an extremely interesting branch of life due to the crazy conditions that the organisms often thrive in.