This article raises some great points. For example, in some areas, farming dairy products is less of a strain on the environment than agriculture. Also, assessing environmental effects depends on how much people buy locally.

Quoted: As a longtime vegetarian, I've always been confident that my diet is better for the planet than that of your typical carnivore. But a vegan pal of mine says I could be doing a lot more, by rejecting all animal products—no eggs, no milk, no cheese. Is veganism really that much better for the environment?

In the spirit of the contaminated carrots, here's an article City Guides did last year during the tainted spinach fiasco.

Quoted: With health and the environment top of mind for many consumers, Community Supported Agriculture is a growing field. Buying a share in a local farm means you can take your weekly dividend straight from the soil.