The only difference between brown and white eggs is the color of the shell, which depends on the breed of hen that lays them.

Peruse the egg section of a grocery store or farmers market, and you'll notice cartons of eggs separated into white and brown ...

I like to call it Green Eggs ... with two eggs per serving. And my friend Lilly here, brought us some eggs straight from her backyard, where her family keeps their very own chickens.

So, in the face of a rampant global appetite and a wildly uncertain future, is the chicken or the egg the more sustainable choice? 2.  Yellow chicken = green chicken. Chicken feed is no chicken feed ...