Many Western countries have birth rates per woman that are well below replacement rate, so their societies are changing (check the "Demography" label on the right).
America's birth rate has been right at replacement (2.1 per woman) until recently; but we, like them, have a graying population. Raleigh NC is "going gray the fastest" with an over-65 population that has nearly doubled from 2000-2013. Austin TX is right behind them, followed by Atlanta GA.
The biggest challenge with much of the population over 65 is financial:
"As people age, the cost of keeping them alive rises with them, and the ability of modern science and technology keeps them living longer. People need a plan. People need to know how they're going to pay for staying alive so long, and they need to know who's going to foot the bill."
(from "Aging in America," Retirement Advisor, cont'd tomorrow)