Penicillin has evolved in the last half-century.

furthermore: evolution is cretaed through adaptation to change. no change = no need to evolve. try adding this into your little E.Coli model you got running in your bedroom.


Or even better, read this, and then email the author with any further questions you have. The article is pretty much the argument I want to make, but can't-- because I got better things to be doing with my time.

http://www.uga.edu/srel/ecoview9-23-02.htm