Despite the use of various contraceptives, the world population keeps ballooning. Will there come a time that all food will be extinct and we cannot feed ourselves or what is the way forward because we are tilling all the virgin lands etc .
the day when the population will grow into as much as 50 billion may be a few thousand years away, and by then there would have been several world wars, catastrophes, natural calamities, earthquakes, global warming, and floods to reduce the population, perhaps to even a lower value than 0.5 billion.