Refrigerators on sale in 2018 in Pennsylvania. The Environmental Protection Agency is planning to phase out the use of cooling chemicals that are powerful greenhouse gases.

A selection of refigerators are available for sale at a big box store in Cranberry Township, USA, April 11, 2018. A U.N.-backed report claims making air conditioners and fridges more energy efficient and using more climate-friendly refrigerants can significantly slow global warming. (AP Photo/Keith Srakocic)