Tierra, bits bytes and life
In the early 1990/s, a biologist named Thomas Ray created a computer program that acted like a computer infected with many little programs. He called it Tierra, Spanish for “Earth.” The little programs could, and did, mutate, self-replicate, and evolve in strange and wonderful ways.
Here’s the home page for Tierra.
Here’s a good article about Tierra.
And here’s a nice video on the Tierra system, and the story behind its creation.