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Barack Obama, Brian Deese, Kate Brandt

President Barack Obama signs an Executive Order, entitled “Planning for Sustainability in the Next Decade,” which will cut the Federal Government’s greenhouse gas (GHG) emissions over the next decade, Thursday, March 19, 2015, in the Oval Office of the White House in Washington. Behind the president is Senior Adviser rian Deese and Kate Brandt, Federal Chief Sustainability Officer. (AP Photo/Jacquelyn Martin)