Letter of the week: Brian Main, Hamilton

Much has been written about the recent UN Report which predicts massive plant and animal extinctions, and its effect on life on earth.

I put it to you, that the world population explosion - a reality that everyone seems to be ignoring - should be of far greater concern.

The world human population is accelerating at an unsustainable rate, doubling over the last 40 years to approximately 7.7 billion.

Reliable scientific research, based upon the earth's limited availability of freshwater, and its maximum capacity to produce food, is estimated to fall short at

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