Nice article on Slate a while back titled How Is America Going To End? by Josh Levin. Essentially a brief look at the ways in which the US could come to a sticky end over the next 100 years. Overall it’s highly unlikely that the US will ‘end’ but a low probability/high impact event could have some really significant consequences.
Here are a just two of the ideas:
What happens when a large group of young, unemployed and disillusioned Hispanics comes up against a small population of relatively affluent whites? This reminds me of China where there is a huge imbalance of young males. This is OK if the economy is booming, not so OK if it tanks.
What happens when the ordinary people encounter a group of synthetically engineered and biologically enhanced supermen and women? Sounds crazy but it isn’t. Income inequality is increasing significantly and we already have a group of transnational executives that can afford the best schools, the best healthcare (which includes body modification and brain training) and the best transport and security.