Earth: 6 Billion Served
In the nearly 40 years since President Kennedy took the oath of office, the world's population doubled to six billion - a milestone many experts did not expect, reports CBS News Correspondent Randall Pinkston.
In fact, according to a new report by population experts, the birth rate has slowed or stopped in Europe and Japan and most of North America except for the U.S., where immigration continues to drive population growth.
The U.S., Indonesia and Brazil have greater populations than other countries in the poorest regions, such as sub-Saharan Africa and in parts of south and west Asia. One billion people live in dire poverty.
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