7 Billion: How Did We Get So Big So Fast?
In 1850 only 1,5 billion people lived on earth. In 1950 there were 2,5 billion. Nowadays it 7 billion!! Where is this going??
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In 1850 only 1,5 billion people lived on earth. In 1950 there were 2,5 billion. Nowadays it 7 billion!! Where is this going??
