When the Environmental Protection Agency’s (EPA’s) Greenchill’s Keilly Witman spoke at the Food Marketing Institute Expo last spring she said so-called natural refrigerants such as ammonia and transcritical CO2 would dominate the conversation and begin to appear in supermarkets in North America after already establishing a beachhead in Europe and Asia.
That does appear to be the case based on a number of announcements made during the first half of 2012.