In this Tuesday, May 17, 2016 file photo, an Indian boy of a migrant daily wageworker sleeps in scorching summer temperatures near an air conditioner shop at a marketplace in New Delhi, India. Nations reached a deal Saturday, Oct. 15, 2016 to limit the use of hydrofluorocarbons, or HFCs – greenhouse gases far more powerful than carbon dioxide that are used in air conditioners and refrigerators, in a major effort to fight climate change. (Photo by Altaf Qadri/AP Photo)
