The UN's new global population projections include some surprises – in particular, that the global population in 2100 will be 3% less than they projected in 2017.
Whatever happens with Brexit, the UK population is projected to increase in size, become more ethnically diverse and shift to a structure which is older.
As DNA testing becomes cheaper, it becomes more feasible to screen large numbers of healthy people for their risk of disease.
Immigration is neither the problem nor solution in many areas where Australia is off-track, from government debt to environmental action.
When President Trump declared the US full, little did he know he was wading into a centuries-old economic debate.
Population growth has pros and cons, and the Morrison government's plan is less about a change in immigration numbers than about increasing the benefits and minimising the costs.
Capital city populations are growing twice as fast as the rest of Australia, because of the employment and business opportunities and lifestyle on offer to both new migrants and long-term residents.
Australian evidence backs up the governments contention that immigration boosts rather than cuts living standards.
Immigration is seen as a global crisis, but the distribution of immigrants is anything but equal. Which countries have the most? Where they come from? Data provides some surprising answers.
Population growth in Australia is a problem mainly because of the lack of a coherent national policy to manage it. The focus needs to be on maintaining quality of life through sustainable growth.
Mathematic models are becoming more sophisticated and now they could actually predict how likely a species is to die out.
The health program was unveiled as the federal, state and territories meet in Adelaide on Wednesday for the Council of Australian Governments with health one of the items on the agenda.
Once seen as being driven mainly by retirees, migration out of of our biggest cities to less crowded coastal regions is now being led by younger Australians.
Urban growth has had much less impact on commuting distances and times than media reports would suggest. The explanations include jobs being widely dispersed and residents' adaptable decision-making.
Turnbull put in place the City Deals program in 2015 - aiming to create better partnerships between all levels of government. Some projects are underway, but we need more than just partnerships.
People think migrants are draining Australia's resources. But if we were to cut down on migration, it would also make sense to introduce policies that limit numbers of international tourists.
The call comes as latest figures show the annual permanent migrant intake fell to 162,400 last financial year – compared with a 190,000 planning level.
One Nation leader Pauline Hanson said Australia is "the highest-growing country in the world", with population growth "double than a lot of other countries". Is that right?
Increasing usage of big data by statistical agencies and other organisations may reduce the ability of populations to have a say in how they are governed.
Fifty years ago biologist Paul Ehrlich published 'The Population Bomb,' an apocalyptic warning that overcrowding would lead to wars and famine. Here's what the book got right and wrong.