No, No Arks Required........

[Anomalocaris]

Here, Rhonda. 

http://blogs.discovermagazine.com/notroc...3FYRqLQPmY

Scientists finish a 53-year-old classic experiment on the origins of life

Using modern techniques, around a billion times more sensitive than those Miller would have used, Parker identified 23 different amino acids in the vials, far more than the five that Miller had originally described. Seven of these contained sulphur, which is either a first for science or old news, depending on how you look at it. Other scientists have since produced sulphurous amino acids in similar experiments, including Carl Sagan. But unbeknownst to all of them, Miller had beaten them to it by several years.

That's nice, except it is now generally accepted that Miller and Urey's notion of the content of the primordial earth atmosphere was all wrong.  So Miller Urey shows some steps in creation of amino acid can be achieved in a simple laboratory experiment that uses conditions unlike those that actually prevailed on earth at the origin of life.  That's it.  It didn't offer insight into how by far the most important and poorly understood step, which is how the right amino acids are concentrated and encouraged to react in thermal dynamically plausible ways that wouldn't blow the whole thing apart, can be achieved.  So It's actual value in replicating any step in origin of life is much overstated and not remotely as high as once thought.

People should really caveat Miller Urey if they wanted to cite Miller Urey in arguing the process of origin of life is understood.