Meal replacement drinks are nothing new. Jevity, Nutren are used primarily by hospitals and store shelves are full of supplemental drinks such as Ensure and MuscleMilk, but Soylent is something different in the sense that its creator, 24-year-old engineer Rob Rhinehart, wants it to test our perceptions of the sustainability of food. What are we truly putting into our bodies? To put it simply, bad stuff, that much is true. Soylent is full of good stuff. A vegan source of protein, and an assortment of carbohydrates, amino acids, proteins and dozens of other vitamins, Soylent is not exactly lacking in...