Hello fellow PostEarthers!

You guys have blown me away thus far...I had no idea that this would become such a vibrant and active community this quickly. You guys have been awesome...but enough of this circle-jerkery...

I'm looking for some book recommendations for a novel or series that realistically depicts a human colonization of space. Wether it's close to home (like Kim Stanley Robinson's Mars Trilogy) or impossibly far away I don't care, as long as it realistically depicts the sociological, economic, and philosophical ramifications of humans being so far from home, with limited resources, etc. Bonus points if it touches on the mutability of human physiology in zero/reduced g, how language would change over time, etc.

Just a quick FYI, I've read the entire Dune series. I have not read the Mars trilogy, any Asimov, etc.

Thanks in advance!