But our affair with the car has blinded us to some of the obvious drawbacks, such as its lack of compatibility with urban life which leaves our cities clogged by semi stationary vehicles with fuming engines and fuming drivers.

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Photo courtesy of Gyre via Wikimedia Commons.

In “Global Change and the Ecology of Cities,” published in the Feb. 8 issue of Science, a team of researchers from Arizona, New Zealand and Australia argue we need to focus more on cities — and not just the “natural” world — to ensure a sustainable future.

“Cities, and the people in them, will ultimately determine the global biodiversity and ecosystem functioning,” says Jianguo (Jingle) Wu, one of the paper’s co-authors and an ecologist at Arizona State University’s (ASU) School of Life Sciences. “Sustainable urbanization is an unavoidable path to regional and global sustainability.”

The paper’s authors advocate a global approach to urban development that recognizes cities both cause and respond to environmental change. That strategy echoes an emerging school of thought that views cities as organic entities — a sort-of Urban Gaia, if you will — things that consume resources, produce waste and interact with their surroundings.
 
While the concept might sound bizarre, it might ultimately prove to be as effective a philosophy as James Lovelock’s Gaia view of Earth. After all, cities around the world are doing nothing but metastasizing, absorbing an ever-flowing influx of rural people either displaced from their traditional lifestyles and/or looking for a better future in a modernizing world.

As of today, according to TaskForce MegaCities, the world has anywhere from 16 to 39 megacities (population thresholds for meeting “megacity” status vary). In just seven more years, that number could approach 60. The trend is especially strong in Asia, which could be home to as many as 10 hypercities by 2025, according to one estimate.

Sustainably managing such urban growth could be key not only to better living in cities themselves, but a better Earth overall.

“The relatively young and highly interdisciplinary field of urban ecology has demonstrated how well-designed cities can actually have less overall impact on the environment than equivalent dispersed rural populations,” said Jonathan Fink, director of ASU’s Global Institute of Sustainability. “The kind of counter-intuitive research results described in (the Science) paper show how an ecological perspective can help urban planners and engineers find ways for society to live more harmoniously with nature.”

The “C40 Large Cities Climate Summit” has partnered with the Clinton Climate Initiative to tackle climate change now, rather than waiting for action from national governments. At the Summit, mayors shared best practices, identified collaborative projects, and planned for future action together. The Mayor of London, Ken Livingstone, explained why:

"The fight to tackle climate change will be won or lost in cities…We are not going to simply talk about what we could do, while the window of opportunity for preventing catastrophic climate change disappears. Every city here today is a leader in at least one aspect of the fight to tackle climate change."

Some of the cities' intiatives include:

• New York Mayor Michael Bloomberg’s controversial proposal for a congestion charge for Manhattan as part of the city's multi-billion dollar Green Plan.
• Toronto Mayo David Miller explained “Zerofootprint Toronto,” which helps residents understand how every aspect of their lives impacts the environment, and creates a network for people to join with friends, neighbors, and coworkers to create a virtual eco-community to create initiatives and measure results.
• Curitiba, Brazil’s Mayor Carlos Alberto Richa described a bus rapid transit system for his city to cut down on pollution from cars.
• Los Angeles Mayor Antonio Villaraigosa announced GREEN LA, an action plan to reduce the city’s carbon footprint 35 percent below 1990 levels. Villaraigosa said it is the most ambitious goal set yet by a major American city.

Summit organizers also invited business leaders in an effort to involve the private sector. Both parties discused how to work together under the conviction that fighting global warming – through innovation, transportation, and energy efficiency – is profitable.

Peopleandplanet.net
Washington Post