How do you imagine the world millions of years from now?

[vulcanlogician]

Uh, a million years isn't that long in evolutionary time.

True enough, but it only took 2 million years for homo erectus to evolve into sapiens. That's a significant change, and it took place in a relatively static environment: Earth. Add to that the fact that future evolutionary changes might be adaptations to an extraplanetary environment, like a Martian space colony, and the process may occur faster. It's reasonable to expect some significant changes in the appearance of our ancestors if they evolve to adapt to, say, the gravity on Mars.