With its rapidly aging population and low birthrate, Japan is the world's largest market for life insurance.

FORBES: Here come the gaijin

Knowing the government's pledge of more cash for more babies wouldn't be enough to raise the worryingly low birthrate, discussions on how to make workplaces family-friendly were reaching a pitch.

CNN: In the Grip of a Virus

One reason for this immigration windfall is that young immigrants will compensate for the low U.S. birthrate.

WSJ: Review & Outlook: The Immigration Windfall

But virtually every country in Europe has a birthrate that is too low to sustain the population.

FORBES: The Global Post and Russian Demography: Still Sloppy, Still Hackneyed, Still Wrong