Health and demographic surveillance systems are important to understand people and the societies that they live in.
Reasoned debates on sustainable migration intake levels are important. But transport and health infrastructure shortfalls in Western Sydney won't be solved by reactive anti-immigration attitudes.
Australia's GPI, a broad measure of national wellbeing, has stalled since 1974. So what has been the point of huge population and GDP growth since then if we and our environment are no better off?
The latest statistics show Australia's population growth in the last decade has been significantly higher than in other developed countries.
Considering all the aspects of life in Australia that are affected by population, it's remarkable that the nation doesn't have a national policy on it.
Long-term studies help identify new risk factors for disease and how we might address them.
Melbourne is Australia's most rapidly growing city, a title it wrested from Perth around 2013-14. Several of Australia's big cities are growing well above the national average population growth rate.
Cracking genetic responses to the changing environment in Africa would open a new frontier in the drive against rising non-communicable diseases on the continent.