7 Billion Humans | Immigration Issues

Immigration: In this urbanized world where rich, poor, young and old from all cultures and with different customs and speaking different languages are packed more and more tightly together in places as unlikely as Cleveland, it may be hard to see how much these diverse groups actually need each other--but they do. As the empty pockets in Sub-Saharan Africa produce a huge population of young workers, the empty nests in Japan are building robots to take care of their elderly because they can't...
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(33 photos)

Created 10 Nov 2011 | Last updated 16 Dec 2011

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