Below is an example of the hot new (as of late 2012) gene editing system taken from bacteria’s innate immune system useful for them for chopping up viral DNA, useful for us for chopping up any DNA we want (you can program the RNA to be whatever DNA you want to cut). Almost every talk these days has a reference to this technology and for sure Jennifer Doudna will get a Nobel Prize for it (among others like Feng Zhang and George Church).