I was creating a couple of random solar systems using the CODA tables in the "Worlds" e-book and I came up with a 40 Million Year old class-M planet. While I realize I could just intervene here and "say" via Narrator's license it's suitable for colonization, I would like to see if anyone knows, in terms of scientific theory, if a space-faring species could live on a planet that's only forty million years young.
Any thoughts would be appreciated.