South Korea is one of those with too few young people and a generally aging population: http://www.techinsider.io/why-south-korea-is-becoming-the-oldest-countr

South Korea is one of those with too few young people and a generally aging population: http://www.techinsider.io/why-south-korea-is-becoming-the-oldest-country-2016-1 http://www.techinsider.io/why-south-korea-is-becoming-the-ol...