The US Marines have tried to project trends and scenarios 15 to 30 years into the future. They had guidance from professional science fiction writers. They created a detailed baseline projection of a more urban world population and then had 2 alternate scenarios. Then they created narrative stories that considered conflicts within the baseline or alternate projections. They projected demographics and then they projected technology. The alternate scenarios are
- a world of water scarcity
- a world where China and India are near peers in economic and military power