Because I am now having to insist that my City ( El Cerrito, CA) expand its chicken ordinances, I have been researching online and elsewhere to make sure the important information is accessible. Here's a good academic research paper prepared in support: http://urbanchickens.org/files/Ordinance research paper.pdf Here's a New York newspaper article: http://www.lohud.com/article/20081119/LIFESTYLE01/811190359/1030/LIFESTYLE Here's an article from the Worldwatch Institute: http://www.worldwatch.org/node/5900 Here's a San Francisco Chronicle article: http://www.sfgate.com/cgi-bin/article.cgi?f=/g/a/2008/06/27/carollloyd.DTL Here's info from our dear California Governator's website on food production/transportation in regard to sustainable living: Buy local produce and support local farmers markets. Processed food in the United States travels more than 1,300 miles on average to reach consumers and produce travels more than 1,500 miles from the industrial farm to the plate. Its up to you! Buy fresh food, not frozen (90% less energy). Its up to you! Buy organic foods as much as possible. Organic soils capture and store carbon dioxide at much higher levels than soils from conventional farms. If we grew all of our corn and soybeans organically, wed remove 580 billion pounds of carbon dioxide from the atmosphere. Its up to you! Eat less meat or none at all. Livestock are responsible for 18 per cent of the greenhouse gases that cause global warming, more than cars, planes and all other forms of transport put together - plus bring a whole host of other resource, chemical, pollution, disease and cruelty issues.