Greenhouse gas emissions in the United States dropped last year after a sharp increase in 2018, new data released Tuesday show. The drop resumed a long-term downward trend driven chiefly by a shift away from coal power generation. The story of the emissions decline has largely been one of market forces —rather than policies—that have made utilities close coal plants in favor of cheaper natural gas and renewable energy. But this shift to lower-carbon energy has been restricted to the electricity sector, and the nation’s emissions cuts are still not on track to meet the targets it agreed to under the Paris climate accord . In order to meet those goals, experts say, federal policies will likely need to target other sectors that collectively make up a majority of U.S. emissions. Chart: U.S. Emissions Relative to International Commitments Overall, U.S. greenhouse gas emissions fell about 2 percent in 2019, […]