In thinking seriously about the negative trends in our future, we're severely hampered by the Hollywood idea of the Apocalypse. That idea, in turn, has deep roots in the millenarianism of monotheistic religions (in which there is an End of Days and it's coming soon) and of 19th Century social movements (there is a Dictatorship of the Proletariat and it's coming soon). Millenarianism has its own problems, not least of which is that people do horrible things to others in the name of clearing the way for their chosen perfect future. But for our discussion here, let's just confine our understanding of the credo to what it has done to our conception of the future.

. Imagine that all the people on Earth - all 6.5 billion of us and counting - could be spirited away tomorrow, transported to a re-education camp in a far-off galaxy. (Let's not invoke the mother of all plagues to wipe us out, if only to avoid complications from all the corpses). Left once more to its own devices, Nature would begin to reclaim the planet, as fields and pastures reverted to prairies and forest, the air and water cleansed themselves of pollutants, and roads and cities crumbled back to dust