Some have pointed to changing immigration patterns, since people with darker skin absorb less vitamin D from the sun. (sciencedaily.com)
Absent major natural or human - made disasters that are sex - selective or extreme changes in immigration patterns, the next quarter century should be a time of relative calm. (discovermagazine.com)
While there are some similarities between Britain's squeamishness over immigration and pre-Freedom Party political correctness in the Netherlands, the UK's historical immigration patterns have been vastly different. (totalpolitics.com)