A map of Venus showing what it would look like if it possessed the same amount of water as Earth.
Interesting…
I often wonder if humans didn't originate there (or Mars, for that matter), fucked up their ecosphere like we're doing now, and a few thousand (or whatever number constitutes a viable genetic diversity breeding minimum) managed to escape to Earth to start the cycle all over.
Once again I am reminded of the famous line from Battlestar Galactica: "All this has happened before and will happen again."