The story of an egg: http://www.upworthy.com/a-video-about-unfertilized-chicken-babies-and-how-corporations-are-fooling-us?c=ufb1
So, pastured eggs seem to be the most humane form of eggs one can get nowadays as the chickens are free to roam in the sunshine and green grass. But please also find out what happens to the chickens after they are old and are no longer able to produce eggs. Ask the farmers for the truth so that you are well informed.