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Population Growth in the Species-rich Tropics
Since 1950, human population has more than tripled in the tropics, home to probably two-thirds of Earth's biodiversity. During the same period, the tropical share of world population grew from 28 per cent to 36 per cent and by 1995 comprised over 2 billion people. Today human population is growing by around 78 million people annually. Population Action International estimates that 51 per cent of this growth now occurs n the band between the two tropics.
Source: Population Action International