In this twenty-minute TED Talk, famed food journalist, and cookbook author, Mark Bittman, talks about what's wrong with the way we eat and how it's hurting our health and our planet.Are you wondering about Mark's eating habits? Mark actually calls himself a "vegan before dinnertime" saying From the time I wake up until dinner I eat only fruits, vegetables, whole grains and legumes. I don’t even eat white bread during the day. And then starting at dinner, I do. I have one meal a day when I do pretty much what I want, which is normally quite indulgent. Check out the rest of the talk below.