Vertical farms grow more food but use much more energy, so let's consider other kinds of urban agriculture.
The ecological value of old trees is irreplaceable for native Australian fauna. Identifying and preserving these trees in cities through smarter planning strategies is important for local wildlife.
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.
Research shows if Australia encourages greenery on buildings, it will reduce temperatures in the city, as well as potential for flash flooding. It also creates new habitats and socialising spaces.
Artificial islands that are now mushrooming across the ocean are regarded as 'engineering marvels'. But, little attention is paid to how these human-made structures affect sea life.
It's a good thing that cities aspire to lead the way in acting on climate change in the absence of stronger national action. But a closer look reveals the limitations of current city-based efforts.
Urban green spaces are most effective at delivering their full range of health, social and environmental benefits when physical improvement of the space is coupled with social engagement.
Australia’s growing cities face a shortage of urban parks. Often, the provision of parks is seen only as planning compliance or an accessory.
The rise of urban greening is an opportunity to recast the relationship between people and environment. Humans and non-human species are ecologically intertwined as inhabitants of cities.
Achieving green cities will require more than just canopy cover targets and central city strategies. It will need new approaches to urban planning and development.
As summer rolls on once again you're despairing at a brown lawn. Perhaps you should embrace a shabbier backyard.
Planting more trees in our cities is a good idea, but we need to remember to plan ahead for conditions those trees might encounter when they mature in half a century's time.
The fact that we have embraced the notion of emailing a tree is no surprise. We have been passionate about trees in cities for a long time.
Emerging research looks at new ways to measure the ecological footprint of cities, a key step to making them more environmentally benign and perhaps more livable.