FILE - Catherine McKenna speaks at the Turning the Paris Climate Agreement into Action panel discussion, on April 14, 2016, at the World Bank in Washington. The head of the United Nations Antonio Guterres announced the appointment Thursday, March 31, 2022, of an expert panel led by Canada's former environment minister Catherine McKenna to scrutinize whether companies' efforts to curb climate change are credible or mere ‘greenwashing.’ (AP Photo/Sait Serkan Gurbuz)