So I have been following some of the current diet trends, and a lot of my acquaintances are getting into this Paleo diet. It intrigues me because it appears "scientific", yet I believe that eating large amounts of meat is ultimately detrimental to our health. Then I saw this article from Scientific American: "Human Ancestors Were Nearly All Vegetarians."
It's another interesting approach to the question: What is the ideal diet for humans? What did we evolve in order to eat? And should we care, or just go about our business using modern technology to eat whatever we want? I hesitate to read the article and say "I was right! I eat just like my primate ancestors! Plus the occasional cheese, but that's OK!"; however, it's pretty encouraging for those of us that tend to eat a "little bit of everything", yet have a mainly plant-based diet.
Even if you aren't interested in changing your eating habits, I think it's an interesting read.