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Weird and wonderful

Estimates of the number of human beings who have ever lived vary greatly and are hotly contested, but many of the estimates range from 90 to 110 billion. With a world population of 6.6 billion in September 2007, it would be a reasonable guess to say that about 6 or 7 per cent of the people who have ever lived are alive today.

What they said:

"A teacher affects eternity. he can never tell where his influence stops." - Henry Brooks Adams, author.

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