The Factory Farm Map, a project of Food and Water Watch, is an interactive map showing the distribution of industrial-scale farms across the United States. In addition to breaking down the number of factory farms by state, the map further distinguishes between cattle farms, pig farms, egg farms, and fryer chicken farms--and allows you to overlay multiple categories. You can even zoom in on each state to see where the factory farms in that state are located, and find out more information about the history of factory in that state. Zoom in on Iowa, for example, and you'll learn that the number of pigs raised in the state increased from 13 million in 1987 to 15.5 million in 2002, but the number of farms declined precipitously, by 26,465. Click on Wyoming, and you'll learn that the state banned factory farms in 1997 after citizens complained about odors, flies, and water pollution. You can also find out the number of different types of animals being farmed by every state in the US, the ranking of all 50 states by how much they pollute, and the ranking of each state by how many factory farms it contains. (Iowa has the most, with 3,876; seven states, including Maine, New Mexico, and Alaska, have none.)

The site defines as "factory farms" those that meet the US Environmental Protection Agency's definition of a "confined animal feeding operation" (CAFO)--in general, these are farms that hold 500 or more cows, 1,000 or more hogs, or 500,000 or more broiler or 100,000 or more layer hens.

These are, obviously, huge operations, with correspondingly huge environmental consequences; the potential harm to humans from polluted water, contaminated air, and a food supply pumped full of hormones, antibiotics, and other drugs has been well-documented. However, just as a wealth of information about climate change has led to widespread public awareness of and concern about the problem of global warming, so, too will more information about how, why, and, importantly, where factory farming exists raise awareness of factory farming as an issue that everyone should be concerned about.

The alternative, of course, is sustainable farming--farming with methods that do not harm the environment, animals, or farmers, and that support local communities. To promote sustainable farming (and show that eating sustainably is becoming an option nearly everywhere in the US), the folks at Sustainable Table are traveling around the US. Their goal: To demonstrate that "sustainable food from small, family farms is more common than we all realize." They'll be seeking out and blogging about sustainable farms and restaurants across the country, starting in West Hollywood and ending up at Farm Aid in New York on September 9. In an ideal world, I'd love to see Sustainable Table and Food and Water Watch create a joint map, focusing not just on the bad news of factory farms, but on the good news of widely available sustainable meat, dairy, and produce. (So get on that, would you, guys?) Many of their road-trip events will be open to the public; check out their very comprehensive schedule here.