My friend introduced me to this site which has various interesting articles about pretty much everything under the sun. The section for Food is very interesting. Also, this site is littered with amazing information graphics so be sure to look out for those.
Here are a few articles worth reading and related to what we have been discussing so far:
Here's a debate about people discussing if meat should be eaten or not.
For interesting info graphics, here's one of every fast-food burger in america:
Also, here's a simple list that shows how each food is using energy:
Here's putting food production for Manhatten specifically in a silent film:
And in one of the quiz 7 questions on why a salad costs more than a big mac, here's a neat graph that shows you why: