Meet the Author:
Mary O’Brien,  San Francisco Bay Area

How big is your house and property? Is it smaller or larger than you want it to be? Or is it just the right size? Do your house and property give you all that you need? Do you live in a neighborhood with many neighbors or not enough? Are your...

In April of 2022, the New York Times ran a viral piece on its front page entitled Trying Everything, Including Lettuce, to Save Florida’s Beloved Manatees. It details a sordid tale of Floridian Manatees — sea cows — struggling for survival amid a riverine habitat polluted by industrial effluents and...

Informal organizational structures are commonly involved with greening efforts in cities, such as waste recycling and urban agriculture efforts. They are particularly relevant in cities of the Global South, where large percentages of the economy and labour are in the informal sector. Collaboration between the formal and informal sectors poses...

Many cities around the world are planning to enhance urban nature. For example, many global cities have promised to plant a million trees, such as Shanghai, New York, Singapore, and Miami, and there are large tree planting initiatives in Uttar Pradesh, Ethiopia, and China, among many others. But most of...

The portion of the Great Lakes basin ecosystem stretching from southern Lake Huron through western Lake Erie is a unique urban refugium where the tapestry of life has been woven with elegance, where the music of life has been rehearsed to perfection for thousands of years, where nature’s colors are...

  Biodiversity faces increasing challenges with the development of cities. Land-use change, intensive agricultural management and pesticide use, invasive alien species, diseases, climate change, and environmental pollution are threatening bees and other pollinators. Helping them to survive means ensuring food security and maintaining healthy ecosystems. Nature conservation and the improvement...

At the end of November 2021, spending a few days in London, I paid a far too brief visit to the Natural History Museum. I had devoted the daylight hours to a survey of the skyscrapers burgeoning in the City’s business district and got to the museum just as the...

I wasn’t in a good shape when I broke the sparrowhawk’s wings. A gray sky over Berlin, a cold eastern wind. An early March day that never had properly lighted up and already started to sink back into dawn. No rain, no snow, but this dry and uncomfortable wind. I...

In the most densely populated city in the developed world, people walk to work through a forest instead of driving in traffic. They take vacations on the metro, family picnics on the edge of a cliff, and routinely walk from their doorstep into a vast urban national park called Bukhansan....

Reconsidering leaf blowers Calls for the ban of leaf blowers in urban centers are on the rise, including community group initiatives, municipal bans, opinion pieces, and proposed state/provincial and national-level legislation. The reasons include noise pollution, particulates, and other conventional pollutants, greenhouse gas emissions, and ecological disruption. Understanding the interconnected...

Cities everywhere are getting hotter. Globally, every year from 2013 to 2021 ranked among the 10 hottest on record due to climate change. Urban areas are generally warming at a faster rate than rural or natural areas due to the urban heat island (UHI), a phenomenon whereby the built environment...

More than half of the world’s population lives and works in diverse, bustling cities. And perhaps, if you are reading this blog, you have a desire to make these places we call home greener—it can be done with nature-based solutions! Quite often city-makers who want to implement nature-based solutions run...

Like seeds planted in my brain The first time I ever heard about permaculture was in 2016. I discovered this life philosophy in the French documentaries “The World of Tomorrow” (by Cyril Dion and Mélanie Laurent), and then in “A Quest for Meaning” (by Nathanaël Coste and Marc de la...

Dr. Ian Mell from the University of Manchester recently published an article in Frontiers in Sustainable Cities on the role of green infrastructure in cities as a tool for economic and ecological “regeneration”. Dr. Mell’s article is one of a series of articles in both the peer-reviewed and popular literature...

Urban public space has been a subject of rethinking for decades regarding its role as a catalyst for revitalization and as a promoter of social interaction. Thus, most cities have experienced substantial improvements which positioned them in a better ranking of liveable cities, since the type and quality of urban...

The COVID-19 pandemic is slowly receding and, while it still is a fatally serious problem in some places, it is possible to imagine it at least receding into an endemic disease. It is perhaps, therefore, a good time to reflect on what COVID-19 has meant and will mean for urban...

UrbanA, ECOLISE, and Communities for Future joined forces to lead an experimental seed session on the first day of the amazing The Nature of Cities Festival (with online discussions on the #TNOCFestival hashtag). About 25 people turned up from different corners of the planet, on Monday 22nd of February 2021,...

So, what happens when a city reaches the top ranks? Have you ever noticed the kind of media attention the city gets? City rankings are indeed very popular and attract a lot of media attention across the globe. Each year, there are more than 40 city indices published globally. In...

Acknowledging local conditions and ensuring adherence across agencies and citizens will ensure achievements of its goals. With over 140 km of coastline and 480 sq.km land area, Mumbai is one of the most vulnerable cities to climate change induced hazards such as sea-level rise, storm surge, and urban flooding amongst...