http://www.nytimes.com/2011/07/28/science/28life.html?pagewanted=1&_r=1&hp
Scientists are trying to create DNAs that uses more than 4 alphabets for coding, or other forms of chemical… well they have, but they are creating more…
these things makes copies of themselves, and when the replication process goes wrong, the change is passed on, thus they evolve. and so far, they live in test tubes.