@CNN: After three years of decline, climate-change-causing carbon emissions rose sharply in the United States last year, according to new research. This marks the second-largest annual gain in more than two decades. https://t.co/6Nwg2EOxUX https://t.co/jZ3F6llzfB

@CNN: After three years of decline, climate-change-causing carbon emissions rose sharply in the United States last year, according to new research. This marks the second-largest annual gain in more than two decades. https://t.co/6Nwg2EOxUX https://t.co/jZ3F6llzfB