"In 1953 Stanley Miller and Harold Urey decided to test the "Oparin-Haldane" hypothesis by "zapping" methane and ammonia gas with electric charges.9 They obtain various amino acids, and the experiment was hailed as "proof" of the origin of life! This same year, Watson and Crick discover the double-helix structure of DNA.1 I want to note that it is a common, though given what many classes teach, forgivable misconception that the natural chemical origin of life has been proven because these experiments created life in the lab. This is mistaken, for not only has life nothing close to life ever been produced in lab experiments, but even if true life were one day created, it still wouldn't prove anything about what actually took place when the first life-forms came into existence"
http://acs.ucsd.edu/~idea/origlife.htm