1.   Global aging and attendant labor shortages will therefore ensure that immigration remains a major issue in developed countries for decades to come.

2.   Global aging could trigger a crisis that engulfs the world economy.

3.   How governments ultimately prepare for global aging will also depend on how global aging itself reshapes politics.

4.   While the consequences of global aging are hard to predict, the one point experts agree on is that the implications are enormous.

5.   In fact, neither Hewitt nor Cattaui proposed concrete solutions to global aging, limiting themselves to pointing out the economic hazards.

6.   But the impact of global aging will stretch far beyond public budgets.