For the first time in human history, the majority of us live in cities. One hundred years ago, 2 out of 10 people lived in cities, as of 2010 just over 5 of 10 people live in cities, and it is projected that 7 out of 10 people will live in cities by 2050. One could say both positive and negative things about this development, but regardless of what you think of urban life, it is undoubtedly here to stay for the near future.
The process of urbanization has largely been caused by the transition from agriculture-based economies to modern economies based on manufacturing, technology, and services. As farms have become largely mechanized and consolidated into large-scale operations, farmers without work have moved to cities to find new jobs. This process has repeated itself in developed countries throughout the world.
From an ecological point of view, the urbanization of society presents a real dilemma. Humans need a fair amount of basic resources to survive: adequate food, fresh water, and homes with basic heating and sanitation. At a Western standard of living, these needs greatly multiply. Urban areas consist of great concentrations of people living in small geographic spaces. These concentrations of people cannot produce the resources they need to live from within the area where they live, so they must be brought in from outside of the city. All of these needs must be met with resources and once used all of these resources produce waste.
As China pushes towards a scale of urbanization not seen
before, driving
projections that by 2030 China will produce twice as much waste as the US,
it is worthwhile to reflect on our waste problem in the US and how we might
address them in order to offer a way forward for other countries around the
world following in our footsteps.
We produce a great deal of waste in the US: 80 percent of US products are used once, then thrown away (as designed to be by manufacturers) which largely drives the fact that even though the US makes up 4% of the global population, we produce 30% of total waste.
We produce a great deal of waste in the US: 80 percent of US products are used once, then thrown away (as designed to be by manufacturers) which largely drives the fact that even though the US makes up 4% of the global population, we produce 30% of total waste.
The
majority (56%) of total US waste consists of compostable organic materials
(food waste, yard trimmings and paper and paperboard). While some of this organic material is
recovered for composting, over
70% of organic material waste (49 million tons) is thrown away. While we have made great progress in
removing yard debris from the waste stream (moving
from a recovery rate of 12% in 1990 to 57.3% in 2011), we still fail
to recover 96% of total food waste which ends up in landfills or
incinerators. Almost
two-thirds of US waste ends up in landfills or incinerators.
These statistics are a punch in the gut to anyone that
believes we should move our food system towards greater sustainability. Even more so for a sustainable farmer,
whose practices are based on a straight-forward ecological model: there’s no
such thing as waste and all un-used resources should be returned to the system
to replenish it for the next round of growth. Most simply we use compost and animal manure to fertilize
the soil to grow new crops and any food leftovers are fed to animals or turned
into compost and added back to the soil to support the next round of growth. Repeat the cycle ad infinitum.
This failure to recover organic materials from being
discarded is not only a lost opportunity to produce compost, but adding insult
to injury, organic materials decomposing in the oxygen-starved environment of a
landfill produces methane gases which make landfills the third
largest source of methane nationally, which has 20 times more global warming
potential than carbon dioxide.
The one-directional urban model of consumption, with
resources flowing into the city from all corners of the earth and resulting
waste largely discarded in landfills or incinerators, produces a massive
ecological problem with far-reaching consequences into the future.
A failure to return organic materials waste generated in
cities to the source from which they were produced is to create a
metabolic rift. The concept of metabolic rift discusses ruptures in natural
nutrient cycles that pose a grave threat to system sustainability:
With the transition to capitalism, a new division of labor between town
and country took shape—on a world scale and within regions—whereby the products
of the countryside (especially, but not only in the peripheries) flowed into
the cities, which were under no obligation to return the waste products to the
point of production. Nutrients were pumped out of one ecosystem in the
periphery and transferred to another in the core. In essence, the land was
progressively mined until its relative exhaustion fettered profitability. (J.
W. Moore, 2000)
An urban world organized around consumption as the main
economic activity produces a metabolic rift at a global scale. The result of this rift – the failure
to return waste to its source to contribute to the next stage of production –
has devastating implications to sustaining this way of living: in the
unnecessary depletion of resources (such as productive soil) that endanger the
viability of future generations, in the inability to practice sustainable
farming using organic fertilizers instead of chemical fertilizers at a large
enough scale, and at the unpredictable peril of failing to bring our ways of
living into better balance with the constraints of the natural world.
Yet, we cannot expect to return to a bucolic past; an urban
future lies undoubtedly ahead for more and more of us. How can we begin to address our waste
problem?
As with almost any problem, answers range from direct
individual action to policy changes at the highest levels. If we are to respond at the scale
necessary to meet the nature of the problem, we will need both people and
politicians to take action within their own spheres of control. Often, policy changes should be guided by
the goal of making positive life-style changes at the individual level easier
to take.
At the individual level, every one of us can begin to remove
organic materials from the waste stream by composting food scraps and yard
debris and participating earnestly in recycling programs. Often the greatest barrier to
individual composting is that most people don’t know how to compost or live in
homes without the space or materials to properly compost. To help address these barriers, on
our farm we run a “compost collective”, collecting the food scraps of our
CSA members and composting them to be returned to the soil from which the food
was grown. It is our very small
way of healing the metabolic rift that occurs in modern food production and
distribution.
People living in cities that want to remove organic
materials from the waste stream will need public programs that provide the
opportunity to do so.
Forward-thinking cities have already begun enacting curb-side composting
programs that can be used as models for other cities, including San-Francisco,
Seattle,
Portland, OR.,
and San-Antonio.
Closer to home, New York City recently passed
legislation to introduce a pilot residential composting program that has
the potential to reach a scale that would provide a replicable model for other
fast-growing global mega-cities. With
food waste and other organic materials accounting for almost a third of all
residential trash in New York City, the pilot program aims to reach 100,000
households by 2014 and expand to the whole city by 2015 or 2016. Early results are positive, with more
than 50% voluntary participation rates, demonstrating that many people want
to contribute to reducing organic waste.
At the state level, two neighboring New England states have
become national trendsetters in creating policy to divert organic materials
from the waste stream. In 2011,
Connecticut became the first state to ban organic materials from landfills with
the passage of Public
Act 11-217. In 2012 Vermont
passed Act No.
148, which initially requires large producers of organic waste (such as
hospitals, schools, and restaurants) to divert organic materials from the waste
stream starting July, 2014 and expands to all Vermont households by July, 2020. A year later, Connecticut amended their
law to follow the
Vermont law model. Both laws
only kick in if a composting facility is located within 20 miles of where the
organic waste is produced, which incentivizes the creation of a new composting industry
that will create jobs that contribute to promoting sustainability.
America largely created the consumption-based life-style and
it has been exported around the world as the best way to become a modern,
developed society. But as other
countries with far greater populations embrace our way of life, we must
acknowledge its dark side: growing waste and the incremental resource mining
that must inevitably rob the land of its ability to sustain us.
So imagine, 250 million new Chinese urban consumers,
creating mountains of waste without a plan to divert organic materials from the
waste stream. China must learn
from our mistakes. If they can
conjure new cities from thin air, they can also use this opportunity to create
a model for a more sustainable urban life with a much lighter environmental
footprint.
Here’s how you can take action to help start addressing the
waste problem:
- Become more aware about the full picture of our consumption-based way of life and its negative consequences and reduce your own individual consumption;
- Begin composting at home, explore if your local farmers market or farm accepts organic waste (find both at localharvest.org), or donate usable food to your local food bank;
- Join the movement of organizations that are working to reduce waste and remove compostable organic materials from the waste stream;
- Identify and contact your Congressional member and state legislator (i.e. NYS Senate and NYS Assembly) and ask them to introduce and support legislation to divert organic materials from the waste stream.
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