Tierra was interesting, but these days I would point anyone interested in that direction instead at Avida and BEACON. https://en.wikipedia.org/wiki/Avida https

Tierra was interesting, but these days I would point anyone interested in that direction instead at Avida and BEACON. https://en.wikipedia.org/wiki/Avida https://en.wikipedia.org/wiki/Avida http://beacon-center.org/welcome/ http://beacon-center.org/welcome/ In particular this was a surprisingly interesting overview of their recent work: http://beacon-center.org/wp-content/uploads/2014/10/BEACON2014AnnualReport_Public.pdf http://beacon-center.org/wp-content/uploads/2014/10/BEACON20...