Recent predictions for population growth in the 21st century are quite different from predictions made several decades ago. Find reports of older population model (say from 1960s, 1970s, or 1980s), and find reports of recent population models? How do they differ? How have the assumptions in the model changed?
Recent predictions for population growth in the 21st century are quite different from predictions made several decades ago. Find reports of older population model (say from 1960s, 1970s, or 1980s), and find reports of recent population models? How do they differ? How have the assumptions in the model changed?
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