In this April 19, 2017 photo, people take a breather from a steam generator at a coal-fired power plant in Lyons, France.
A group of researchers have found that the toxic gases emitted by coal-burning power plants can make people more susceptible to cancer and even heart disease.
Their study was published April 19 in the peer-reviewed Journal of Occupational and Environmental Medicine.
The study was funded by the French government, the French Research Council and the European Commission.
In this photo taken April 20, 2017, an industrial steam generator burns at a power plant near Paris, France, which is the countrys largest source of CO2 emissions.
The European Commission is funding a study on the health effects of the toxic pollution.
In the early 1990s, the EU passed an ambitious global air pollution rule known as the Clean Air Act.
The law required countries to reduce their CO2 levels by 30 percent by 2020.
Since then, more than half the world has passed that goal.
But CO2 is still one of the biggest global environmental pollutants, polluting about 6 percent of the planet’s air.
Many of those countries are already struggling to cut emissions and some have already made significant strides.
For instance, the United States cut its emissions by about 28 percent in 2020.
But the U.S. has been doing so only because of federal and state action, not the Clean Power Plan.
The U.K., which is about to launch a new plan for cutting its CO2 level by 26 percent by 2030, is also making progress.
And countries that are not yet making significant strides in reducing emissions are starting to catch up.
This April 18, 2017 file photo shows a steam boiler at a plant near the village of Saint-Roch, in eastern France.
The Environmental Protection Agency (EPA) has been reviewing the plan for the past few years.
It has been an issue in the U