Although the population of the world continues to grow substantially, 79 million a year, the rate of growth has declined by nearly half in the last 40 years – from 2.0 to 1.2 per cent per annum. It have varied significantly by continent … Read more here.

Jennifer Marohasy BSc PhD has worked in industry and government. She is currently researching a novel technique for long-range weather forecasting funded by the B. Macfie Family Foundation.