the current population of the earth is far too high. the immense amount of global over-population on this planet is the primary cause of runaway carbon emissions, climate change, deforestation, food insecurity, pandemics and a spate of other interrelated problems. to maintain a sustainable population, and a free society where we have food security and enough resources for everybody to live freely, we need to cut our population at least in half and then severely curtail population growth. i am in favour of a global population between 1 and 2 billion people.