Levees in New Orleans were unable to prevent flooding during Hurricane Katrina in 2005.
Delta cities in both rich and poor countries face uphill, and potentially costly, battle in containing risk from flooding.
The bird cage in Beijing: ready for its next close-up.
People are increasingly expressing worries over the environmental impact of Olympic Games but for every London, there's a Sochi -- or another Beijing.
A defence of La Défense, and other towering architecture across the globe.
Melburnians love their trees, and for good reason.
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.
Chicago has encouraged green roofs to reduce water runoff and energy consumption in buildings.
Mayors from the around the world are at the Vatican to discuss climate change, a global issue that's proving to be most effectively addressed at the local level.
Nigeria’s plans for a new modern city need to be boosted so that they deliver a metropolis like the Al Maryah Island in Abu Dhabi.
Rather than just becoming a financial venture, the Eko Atlantic experiment can be carried further at no extra cost to become the hub to transform good governance in Nigeria and West Africa.
Raise the (Thames) Barriers!
With the sea level set to rise up to 1m by 2100, cities around the world must adapt, if they're to avoid disaster.
Retrofitting old or cheap houses with earthquake protection is often expensive and laborious. What if we could save whole streets at a time?
Historic: weather patterns similar to what’s causing the drought in California are happening in Brazil.
The same persistent weather pattern bringing hot, dry conditions to California is likely connected to a punishing drought in the Sao Paulo area in Brazil.
Well-connected landowners owned 75% of the rezoned land, but only 12% of comparable land immediately outside the rezoning boundaries.
A study tracks how well-connected land-owners have benefited from favourable rezoning decisions. So what's the best way to crack down on these cosy relationships?
The Separation Tree in the Royal Botanic Gardens, Melbourne, marking where Victoria’s separation from New South Wales was celebrated in 1850, is dead after two attacks by vandals.
Tree vandals after better sea views or with political goals deprive everyone of the benefits trees provide. Despite costing local councils thousands in replacement trees, they are rarely caught.
People of Baltimore rally after six officers were charged in the death of 25-year-old black man Freddie Gray.
America is a country with pockets of poverty with neighborhoods filled with unskilled workers with limited opportunities.
African cities are growing fast - and there are many reasons to be excited about this rapid urban development.
Skaters bring culture and creativity to places others avoid.
Skate scenes are social, creative, and can make urban living better for everyone.
Packed but greener than many: The mass transit system in Delhi contributes to its lower-than-average carbon footprint ranking.
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.
The Boston-area transit authority has had major disruptions and shut-downs this winter.
Despite the Patriots winning the Super Bowl, January and February were not kind months for the people of Boston and New England. By February 10th, more than 60 inches of snow in 30 days fell on the city…
Cities are always much more complex than their popular perceptions.
What is the future of Australia’s wealthiest state? The Conversation, in conjunction with Griffith REVIEW and Curtin University, is publishing a series of articles exploring the unique issues facing Western…
City planners are looking to redevelop the eastern part of midtown Manhattan. How can they preserve its character, economic importance, and functionality?
Good historians know that history rarely teaches clear lessons. When it does, we should heed them. In the 1920s, urban visionaries completely refashioned midtown Manhattan, making it the most modern and…
How did this roof become green?
Voluntary programs are all the rage. From ratcheting up cybersecurity to fighting obesity, firms in the United States and elsewhere voluntarily make pledges to do better than governmental regulation. Firms…
The Gold Coast is one of Australia’s climate “hot spots” — vulnerable to rising seas, storms and erosion.
The world’s population could reach almost 10 billion by 2050. Most people will live in cities. To accommodate an additional 3 billion people, we’ll need to build the equivalent of one new city, that can…