Dense, high buildings limit the space available for urban greenery. But imaginative projects that involve the community can ensure nature and the city go hand in hand.
Self-driving, shared, electric vehicles and increasing urban density represent four disruptions that will transform city life. But a transport utopia isn't a guaranteed outcome of their interactions.
Many countries around the world are vulnerable to wildfires, but a fire engineer warns that most are not spending enough on research into how fires spread and ways to reduce risks.
Residents of established middle suburbs are slowly coming round to the idea, but governments and the property sector lack the capacity to deliver compact cities that are acceptable to the community.
Autonomous vehicles have many benefits, but they may be bad news for nature conservation.
How do you prevent urban sprawl? Researchers look to a program in New Mexico for an answer.
Campaigners in Perth are fighting the destruction of bushland for a new highway. They have two of three historically important factors on their side.
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.
Government and industry need to demonstrate the benefits of well-designed higher-density housing. Rich residential display projects may be the ideal catalyst for creating smarter cities.
If Perth can preserve the rich biodiversity of its setting, it will become a model for sustainable city development that fully connects with the value of natural ecosystem services.
Like Brazil's favela dwellers, America's working poor felt a sense of pride and community in their shantytowns – and desperately resisted the powerful interests that sought to demolish them.
The Banksia woodlands of the Swan Coastal Plain are home to thousands of species, many unique. But they are gradually being swallowed by Perth, one of the world's most sprawling cities.
The likes of Sheffield, Bilbao and Leipzig have staged a spectacular comeback.
In the media, urban consolidation is often depicted as a threat to Australian suburban life. In reality, it's a result of managed planning processes to ensure growing cities remain liveable.
Plans for managing Perth's rapid urban growth have been touted as green. But they still look like robbing the iconic Carnaby's black cockatoo of yet more crucial habitat.
The '30-minute city' goal is about more than urban rail and other transit projects. It means transforming our cities into centres of activity where work, study and services are all close by.
Farms on Sydney's fringes supply 20% of the city's food. That could drop by more than half if urban sprawl isn't kept in check.
Australians may need to get used to coping with more disruptions to their food supply and rising food prices in a warming climate.
Melbourne's farms currently supply over 40% of the city's food. But a growing population and urban sprawl mean by 2050 they'll supply half as much.
Having all your green in one place or not has been taxing urban planners for some time.