Danfoss highlighted the sustainability benefits of CO₂ refrigeration systems in supermarket applications during a presentation at ATMOsphere America 2014, which was held June 18-19 in San Francisco, Calif. Now in its third year, ATMOsphere America convened industry leaders to discuss the latest technologies, market trends and regulatory issues in the field of natural refrigerants. This also was the third year Danfoss was a sponsor of the conference.