The megabill President Trump signed into law this month is expected to make a major dent in the U.S.’s climate progress, adding significantly more planet-warming emissions to the atmosphere. Models of the legislation that have emerged since its passage earlier this month show U.S. emissions will rise as a result of its implementation. One from climate think tank C2ES found U.S. emissions will be 8 percent more than they would have been otherwise as a result of the package. “An 8% increase in our emissions is … still a massive amount of emissions,” said Brad Townsend, the group’s vice president for policy and outreach. Taking into account all of the efforts to reduce U.S. emissions over the last 20 years, Townsend said, the bill represents “rolling back a third of that progress with a stroke of a pen.” “From an emissions perspective, this bill is a disaster,” he said.