Who was president when U.S. greenhouse gas emissions rose most sharply since 1990, the U.N. benchmark year for action to fight climate change?
– George W. Bush (2001-2007)
– Bill Clinton (1993-2000)
– George H.W. Bush (1990-1992)
(I’m giving presidents responsibility for the full calendar year of their inauguration in January; official U.S. data are only available until 2007)