Such projects should be clear from the outset about who owns them, who will build them, and who they are for.
Traditional urban planning is being stretched by the pace at which renewable energy systems are being installed. New codes and guidelines are needed to manage emerging conflicts over land use.
Victoria offers lessons in the benefits of integrating metropolitan and regional planning, using regional rail to shrink distance and ease the pressures of growth on our big capital cities.
While many talk about 30-minute cities, some aim for residents to be able to get to most services within 20 minutes. But cities like Melbourne have an awful lot of work to do to achieve their goal.
Even where communities are mixed, many inner-city families go to extraordinary financial and geographic lengths to ensure their children do not go to school with children from 'the flats'.
Australians are losing the backyards that once served as retreats from the stresses of city living. Our health is likely to suffer as cities become less green and much hotter.
Research shows planners and built environment professionals have surprisingly poor knowledge about how cities might harm mental health. The good news is that simple steps can make a big difference.
Shifting to plug-in cars wouldn't be enough to max out global oil consumption by 2040. But it could help make that happen if cities pitch in and ride-sharing doesn't crowd out public transportation.
Many new housing developments are being built along busy roads and rail lines, but lack design features that would reduce occupants' exposure to harmful traffic pollution.
Urban residents are increasingly keen to farm verges, parks, rooftops and backyards, but planning rules sometimes stand in the way.
Cities have always been more than a dense collection of people. They are labs of innovation, hotbeds of crime and inequality, architectural stunners, decaying ruins and everything in between.
Extreme heat divides people from the environment and from each other. So with the rapid densification of our cities, what kind of legacies are we building for future generations?
Tokyo has experienced extraordinary population growth but is among the world's most liveable cities. Just how has it managed the pressures of growth?
Achieving the goal of sustainable cities depends on rolling back the market after decades of privatisation and deregulation.
The rail project may well help get more commuters into the CBD, but offers few benefits for the parts of the broader metro area where most population growth is occurring.
Financial benefits are behind the development industry’s push for a continuous rapid population growth. But our poorly planned cities are ill-prepared and already struggling.
A rail link is a big step towards transforming transport access and land use in ways that will enable a much bigger city to remain liveable. And Melbourne can learn from Sydney about this.
A former industrial region in the heart of Germany is slowly reinventing itself for the 21st century, offering urban planning lessons for Detroit and beyond.
New research shows many good intentions for creating urban environments that promote good health were not carried through. The solutions start with engaging more closely with residents themselves.
When wealth accumulation becomes the driver of urban regeneration, residents who already have little or no say in the future of our cities are further marginalised by gentrification.