The US is home to the world’s largest natural gas field and one of the worlds largest natural-gas infrastructure projects.
But this infrastructure is also home to some of the most dangerous chemicals that have plagued US and global clean energy efforts in recent years.
That’s the conclusion of a new study released Wednesday by the National Academy of Sciences (NAS).
The study was conducted in partnership with the US Environmental Protection Agency and the Institute of Medicine of the National Academies.
The study found that natural gas can be as dangerous as coal, and it’s not clear that the industry has adequately addressed the risk posed by toxic chemicals.
Natural gas is also the most abundant fossil fuel, and the gas industry is also spending billions of dollars to develop new ways to extract and store it.
In the study, researchers analyzed data from over 100,000 US air quality tests conducted by the US Air Force and the Environmental Protection Department from 2005 to 2013.
Researchers also analyzed data collected by the Environmental Health Sciences Agency and conducted by industry-sponsored organizations and universities.
The researchers found that, in general, natural gas leaks into the environment about half as much as coal does.
But the biggest risks came from methane, a potent greenhouse gas that is more than 100 times more potent than CO2.
“In addition to the air pollutants, the methane leaks into waterways and into the ground, which also releases the toxic chemical benzene,” the study said.
The US Energy Information Administration (EIA) and the Natural Resources Defense Council (NRDC) also released separate reports on the dangers of methane in 2014 and 2015.
In 2014, the EIA found that methane levels in the United States were at their highest level since at least 2007.
The methane level in the state of Colorado was 10 times the state average in 2013.
The NRDC found that the methane level was at its highest level for at least seven years.
“The new study confirms that the risks posed by methane emissions are not diminishing,” said NRDC senior scientist Matthew Myers in a statement.
“Methane and CO2 are the leading greenhouse gases, and both can pose serious health risks to human health.”
The report also found that US natural gas consumption is down 7 percent over the past year, partly because of a reduction in coal-fired power plants and a shift to natural gas from other sources.
That shift to coal has also contributed to the sharp decline in natural gas prices.
Natural-gas prices are expected to remain high for years, as the US energy sector relies on cheap natural gas as a way to meet the needs of power plants.