Facts don’t support Trump’s claim
President Donald Trump said the United States "will continue to be the cleanest and most environmentally friendly country on Earth" as he announced a U.S. pullout from an international accord designed to curb climate change. But facts muddy that claim. Data show that the U.S. is among the dirtiest countries when it comes to heat-trapping carbon pollution. One nation that has cleaner air in nearly every way is Sweden.
"The U.S. is well behind other countries in having the cleanest and most sustainable environment," University of Michigan environmental scientist Rosina Bierbaum said in an email.
The U.S. emits more carbon dioxide than any other nation except China. In 2014, the U.S. spewed 237 times more carbon dioxide into the air than Sweden, according to figures by the U.S. Department of Energy's Oak Ridge National Laboratory.
"On pretty much any cli- mate-related indicator, the U.S. will not look good," said Glen Peters, a Norwegian climate scientist who is part of the Global Carbon Project that ranks worldwide emissions.
The U.S. is No. 2 in per person carbon dioxide pollution, behind Luxembourg, among 35 developed nations plus China, India and Brazil, Energy Department data show. That's 19.1 tons (17.3 metric tons) of carbon dioxide per year for the average American, compared with 4.9 tons (4.5 metric tons) for the average Swede.
Taking into account economics, the U.S. ranks 10th highest in carbon pollution per gross domestic product behind China, India, Russia, Estonia, Poland, South Korea, the Czech Republic, Mexico and Turkey, according to the International Energy Agency . The U.S. spews almost five times more carbon dioxide per dollar in the economy than Sweden.
Because carbon dioxide stays in the atmosphere for more than a century, scientists and regulators say it's more important to look at historical emissions. Since 1870, the U.S. has produced about one-quarter of the world's carbon dioxide — twice as much as China — and that makes it the biggest polluter in the world by far, Peters said.