Gene editing technologies such as Crispr-Cas9 have the capability to rewrite our DNA and change life as we know it. In this new series, we spoke to people around the UK who could be touched by the new technology. In this first episode, we look at how DNA and identity interact. Does DNA make us who we are? What if we were to change that? And what does it mean to be different in a world that strives for perfection?