Shrinking life to bite size
by Jim Hagerman
I probably do not have to convince readers of this publication that global warming will impact the future of the planet. Most of us have seen Al’s movie, and everyone has read predictions of a grim future of mass extinctions, rising sea level, droughts, famines and floods.
We each contribute to global warming. The average American generates about 1,250 pounds per month of carbon dioxide from residential energy use and transportation. Automobile use is responsible for a substantial part of individual carbon emmisions. The average car travels about 12,000 miles per year and gets 25.4 miles per gallon, generating 770 pounds of CO2 per month.
A few compact fluorescent light bulbs do not compensate for this vast source of CO2. Vehicles powered by alternative fuels, efficient car, and driving less can decrease our CO2 production. Alternative fuels for cars are a partial solution at best; the energy in hydrogen fuels will have to come from somewhere, if the technology ever becomes practical. Improving gas mileage helps as long as we do not drive more and cancel out those gains. The best way to prevent the various disasters that global warming will inevitably cause is to simply stop driving so much.
Driving less is proving difficult. We all want to live in a cabin in the woods, but we usually settle for a house in the suburbs (or our house that used to be in the woods gets surrounded by suburbs). Jobs, school and shopping are far from home. New stores, centralized schools, offices and industrial “parks” consume farmland and forest, and getting to them means more driving. The distances we drive every day are just not practical for cycling or walking and seldom work for transit.
A first step toward driving less is to live closer to our daily destinations. Americans move every five years on the average, so a major shift in living and travel patterns could take place relatively quickly. Of course, our lives are complicated and the places we go are not always close together. Destinations change over time. Statistics say three quarters of our driving miles are not directly related to work, so we must make tradeoffs between daily commutes and access to retail services and entertainment.
As more people make housing choices based on living close to work, friends, entertainment and commercial destinations, the market will respond by making more such residences available. This is the impetus behind the rebirth of downtowns in our region, where previously empty buildings have been converted to lofts and condos. Downtown has again become a trendy and exciting place to live. The car-bound ennui of the suburbs has also encouraged the rediscovery and rehabilitation of older residential areas near downtown.
In order to make a real dent in the rate of carbon loading, this trend has to go way beyond a few downtown hipsters. Offices and industries have to be reconnected to the fabric of the city instead of being isolated in former countryside. Mixed-use, mixed-income, higher density and energy-efficient redevelopment within the city must take the place of low-density development on the periphery.
We need to stop subsidizing the problem we are trying to solve, and government policies could encourage us to stop digging ourselves deeper into the hole of car dependency. Some communities are encouraging quality urban redevelopment, which is a big step in the right direction. At the same time, suburban sprawl continues unabated. Impact fees on greenfield development would at least recoup part of the taxpayers’ costs.
Most of us do not realize it, but car use is heavily subsidized. If car users covered the costs of building and maintaining the infrastructure they use, gas taxes would be over $6 per gallon, and that does not include environmental costs. How much is our survival worth, a $6 carbon tax?
Bicycling instead of driving can help in the fight against climate change, but our land use and development patterns make bike transportation difficult. Roads are hostile to bikes because they are built to carry large volumes of motor vehicles at high speeds. For many of us, daily travel distances are too great for practical cycling; most of us think more than 10 miles a day is too much hassle. We can make cycling (or walking or transit) more practical for ourselves by choosing housing close to daily destinations. We can help make the city friendlier for these transportation choices by participating in the planning process and pushing for more compact, less car-oriented development.
Labels: carbon dioxide, planning, transportation
