This is definitely on my to-read list, even though near-future SF always makes me feel slightly wistful and sad that I’ll be dead before the end of the 21st century.
“In this way, 2312 is able to be more than just a simple story. It’s a future history, a dream of all the complicated ways we might muddle through as a species, spreading out into space without ever really fixing all the old problems that have nearly extinguished us again and again.”
Review is at io9 here.