The Peter A. Rock Thermochemistry Laboratory, supervised by A. Navrotsky, is a unique laboratory for the determination of thermodynamic properties by calorimetric techniques. It occupies over 5000 square feet of space on the fourth floor of the Chemistry Annex building. Though used primarily by Navrotsky’s group, it is open to collaborative research and is a major resource for NEAT (Nanomaterials in the Environment, Agriculture, and Technology).