President Barack Obama walks with President Xi Jinping of the People's Republic of China on the grounds of the Annenberg Retreat at Sunnylands in Rancho Mirage, Calif., June 8, 2013. (Official White House Photo by Pete Souza)
In a press release issued on 10 June 2013, WWF's Samantha Smith, leader of the WWF’s Global Climate & Energy Initiative, responds to the pledge announced on 8 June 2013 by U.S. President Barack Obama and Chinese President Xi Jinping to reduce the use of hydrofluorocarbons, or HFCs.
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