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Henri de Castries, chief executive officer of Axa SA, poses for a photograph ahead of a Bloomberg Television interview at Climate Finance Day outside the Organisation for Economic Co-operation and Development (OECD) headquarters in Paris, France, on Friday, May 22, 2015. The 28-nation European Union plans to cut carbon emissions 40 percent by 2030, double the commitment it made for 2020. Photographer: Jasper Juinen/Bloomberg via Getty Images

Henri de Castries, chief executive officer of Axa SA, poses for a photograph ahead of a Bloomberg Television interview at Climate Finance Day outside the Organisation for Economic Co-operation and Development (OECD) headquarters in Paris, France, on Friday, May 22, 2015. The 28-nation European Union plans to cut carbon emissions 40 percent by 2030, double the commitment it made for 2020. Photographer: Jasper Juinen/Bloomberg via Getty Images