that we originally came from Venus, a carbon dioxide rich (…

that we originally came from Venus, a carbon dioxide rich (which humans expell) rocky planet. we landed on earth during the younger dryas when the temperature rose to a stable level closer to what it is today. Musk is developing the technology to get to Mars...so it's plausible that in the past 50,000 years a civilisation has already done it from Venus to earth.

I'm not saying I fully believe it, but it's a theory that interests me.