Essays Archive

Urban waste management is a crucial component of our constant interaction with the environment within and around our cities. Managing waste efficiently and sustainably is a unique challenge for us all that depends on development trends, socioeconomic composition, political situation, and a host of other factors. This dependence is especially...

There has been a rapid decrease in the amount of open or natural space in Japan in recent years, particularly in urban areas due to the development of housing. Preserving these areas as wildlife habitats and spaces where children can play is a very important issue nowadays. I wrote about...

Recently, a popular concept called conservation development (CD) has gained traction in many planning and design fields. CDs typically are developments where homes are clustered on small lots with the remaining areas conserved as open space, as opposed to traditional development, where homes are spread out, fragmenting the original natural...

Measures taken in cities to improve their adaptation to drought and for carbon sequestration are usually based on general standards to reduce water consumption and greenhouse gas emissions and/or to reach an efficient use of water and energy. Normally, these proposals are introduced using ‘globalized’ technologies, which are applied everywhere...

The year 2014 seemed a long year when it came a year ago but passed by very quickly giving way to another long New Year and fresh hope that the world would be prosperous. What does it mean for all the countries in the world to be Prosperous? It requires creating...

Community gardeners and urban farmers across North America are using an innovative research toolkit developed in New York City to measure and track the impacts of their work. A small group of dedicated gardeners created the toolkit in mid-2013 as part of the Five Borough Farm initiative of the Design...

Land really is the best art. I think having land and not ruining it is the most beautiful art that anybody could ever want. —Andy Warhol The new year is a good time to look back before looking forward: this blog offers opportunity to take stock of 2014, which was...

“Because then it becomes a beautiful self-driven machine. Nature driving people driving nature. Where the word is spread and the pride is shared and spread and it spills over (in the community). Everyone wants to feel proud of something that is on their doorstep“. —Kelvin Cochrane, baker and community-activist, Bottom...

Small-scale urban spaces can be rich in biodiversity, contribute important ecological benefits for human mental and physical health (McPhearson et al., 2013), and overall help to create more livable cities. Micro_urban spaces are the sandwich spaces between buildings, rooftops, walls, curbs, sidewalk cracks, and other small-scale urban spaces that exist in...

It’s been a great year at The Nature of Cities. The number of contributors has grown to almost 170, and we published 100+ blogs, long-form essays, and global roundtables. Most important, we’ve attracted more and more readers: in 2015 we had 170,000+ visits from 2,812 cities in 140 countries. Thank...

Forget the damned motor car and build cities for lovers and friends. —Lewis Mumford, My Works and Days (1979) Humanity managed for the better part of 400,000 years without cars and did just fine. Julius Caesar, Michelangelo, William Shakespeare, Adam Smith, and Abraham Lincoln lived in cities and never drove...

We are not in the Age of Aquarius that had brought—to some of us—radical hope about societal change and a turn toward ecology, steady state growth, and different GDP metrics, including happiness. The age was about love, unity, integrity, sympathy, harmony, understanding and trust. The Age of Aquarius was about...

September 2014 marked the 50th anniversary of the signing into United States law of the Wilderness Act. A watershed act and a cornerstone of contemporary environmentalism, it  put into place new and important safeguards on the protection and development of some of the nation’s most impressive wild areas. As we...

On a Friday night at the end of November 2014, nearly 200 people arrived in the departures zone of Berlin’s former Tempelhof Airport for five hours of presentations, working groups and community-led exhibitions. A projection screen stood on the baggage carousel, and former glass-walled airport offices held bulletin boards and...

Remnants of indigenous vegetation in urban and rural areas often are the only remaining examples of ecosystems that were once more extensive before human settlement. They are therefore vital for preserving and promoting biodiversity. Remnant vegetation also serves as a refuge for indigenous plants, fungi and animals that would not...

Microbes play a key role in the function of ecosystems. They contribute to biodiversity (Fierer et al. 2012), nutrient cycling (Fenchel et al. 2012), pollutant detoxification (Kolvenbach et al. 2014), and human health (Gevers et al. 2012). Since they control the composition of the gases in the atmosphere, they also...

I write this piece from my recent experiences with young and early career researchers at my University of Makerere in Kampala. It is a graduate conference organized by the College of Agricultural and Environmental Sciences and among students are those from the School of Forestry, Environmental and Geographical Sciences, with...

What are the global patterns of biodiversity the world’s cities?  Are urban spaces biologically homogeneous and depauperate, or do they harbor significant native biodiversity?  These are the questions of a collaborative study of biodiversity in the world’s cities. For several years researchers and practitioners have thought that cities may be...

Every year, new scientific advances indicate life is more interwoven than we ever imagined. From recent reports that reveal the cascading effects of wolves’ reintroduction to Wyoming to current studies that track the dire impact of Washington dams on the decreasing nutrient loads in Montana forests, evidence builds of a...

Introduction Mike Houck Urban Greenspaces Institute In winter 2009, Houston Wilderness hosted an inaugural meeting of what would become the Metropolitan Greenspace Alliance.  Today the Alliance is a national coalition of coalitions working in ecologically, culturally, and economically diverse communities across the US. Alliance members represent Portland, Oregon; Seattle, the...