Not only has income inequality in Australia grown over the past two decades, rich and poor are also more segregated in terms of where they live in the big cities.
Our big cities increase incomes faster than population growth, but most residents miss out on the extra income growth. Creating multiple centres of activity may help make bigger better for everyone.
This universal symbol of love has proven remarkably divisive.
Some say homelessness creates squalor in our cities. But Hosier Lane — the most Instagrammed spot in Melbourne — thrives partly due to homeless street artists.
Bans are ineffective when used against populations that have nowhere else to go. Importantly, research shows that punitive approaches to the homeless cost more than supported housing strategies.
The Melbourne suburb of Richmond is prime inner-city real estate, but the community is paying a price for redevelopment that jars with the existing neighbourhood.
The increasing global focus on essential services and public space as a key combination for successful city-making is relevant to fast-growing Australian cities too.
Australia's city foodbowls are an important part of the nation's food supply, but they're under increasing pressure from growing populations.
Melbourne ranks as the World's Most Liveable City. But does that tell us what people really love? Lovability is a new approach to city metrics.
Travelling to work can require as much water as you use at home.
Many factors have influenced population density change in Australian cities over the past 30 years. Melbourne has led the way in inner-city rebirth as a way to help manage future growth.
If the sharing economy is here to stay, planners and designers must respond with imagination to spread the positive effects of the tourism economy for the benefit of residents as well as tourists.
Businesses have traded on graffiti and the air of edginess that draws visitors to Melbourne's laneways. But they draw the line at sharing space with the homeless, whose right to the city is denied.
Eye-tracking technology helps us understand how people interact with their environment. This can improve policy and design, but can also be a tool for surveillance and control.
Imagine cities competed to eliminate hunger, poverty, unemployment, crime and greenhouse emissions, and to offer housing and transport for all. Don't scoff – urban planning was once an Olympic event.
It's a project that creates benefits for Melbourne's western suburbs and the state as a whole. But the inner-city elite don't like it and recent experience suggests their opinion holds sway.
A citizens' jury has been working to refresh the Future Melbourne strategy. It's part of a broader shift from government decision-making for communities to decision-making with communities.
Bigger cities increase wages, output and innovation, but also problems of congestion and pollution. Congestion charges can minimise these problems by dramatically improving traffic flows.
With four weeks to go there is still much uncertainty in this election campaign. But, so far, the Greens would be pleased with their performance.
Feeding Melbourne generates over 900,000 tonnes of edible food waste every year, enough to feed more than 2 million people.