"Genetic engineers have invented a new way to quickly, precisely and thoroughly rewrite the genome of living bacteria."

http://www.newscientist.com/article/dn20694-e-colis-genetic-code-has-been-hacked.html

"James Collins of Boston University says the paper represents an important advance for synthetic biology. 'The team shows it is possible to introduce in a rational way large-scale changes in the genome of an organism. They have very cleverly swapped one punctuation mark with another punctuation mark, which opens up the possibility of rewriting the genome wholesale.'"