When I was on holiday in Poland two years ago I saw more baby carriages than I had ever seen in my life! I am not saying this article is wrong, but my own eyes say otherwise.
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USA's birth rate is 1.6 versus Poland's 1.1 when both need to be 2.1 to maintain the population. What I do not know is if the large number of Polish men who left the country for employment are somewhat affecting that number.