The federal government estimates that the costs associated with air pollution caused by coal plants are about $3.8 trillion.
The amount of pollution that occurs each year in the U.S. is more than $20 trillion, according to a study published by the National Academies of Sciences and Engineering in July.
The study looked at the emissions of sulfur dioxide and nitrogen oxide, which are two of the main pollutants emitted by coal-fired power plants, as well as particulate matter, a class of airborne pollutants that includes black and gray particles.
The analysis showed that air pollution costs the U,S.
about $17 billion annually.
In a news release, the National Academy of Sciences said that the study, which was conducted using data from the National Oceanic and Atmospheric Administration and other sources, showed that the cost of air pollution is higher in areas where coal plants have been built.
The agency said that it’s important to note that the number of coal-burning plants that emit the pollutants is limited, and it’s likely that those plants are not responsible for causing pollution.
The study also found that the health risks from coal are higher in some areas, with health effects including respiratory problems, heart disease, and cancer.
Coal plants are still burning coal at about 30 percent of their output.
Coal-fired electricity plants produce about 70 percent of the country’s electricity.
Although coal has been around for a long time, the pollution that comes with it has been on the rise for years, the report found.
“The problem is not just about carbon dioxide emissions from coal plants,” said James Hansen, an environmental scientist at NASA who co-authored the study.
“It’s about how much coal plants actually emit.
The emissions that are coming out of coal plants is growing.”
Hansen said that coal pollution is still a significant problem in many places.
“The health and safety risks associated with coal are still very high,” Hansen said.