The facility, in Colstrip, Mont., used a new E.P.A. system for requesting special waivers from President Trump.

Kilometers above the Earth’s surface, the ozone layer protects humanity and all life from the sun’s harmful ultraviolet rays.

You've likely heard about a NASA study which supposedly proved that certain houseplants can help purify your home's air.

Ground-level ozone is a major air pollutant that shortens human lives and kills thousands each year, resulting in major ...

The rate at which the planet is warming has sped up since 2010, and now researchers say that China's efforts to clean up air ...

Referring to a little-known provision, it said power plants and others could write to seek exemptions to mercury and other ...

"Sometimes you can't see air pollution — and sometimes you can ... Like other businesses, semiconductor plants require ...

The dirtiest coal-fired power plant in the US is asking Donald Trump for a waiver from pollution mandates, taking up the ...

Mass firings and regulatory rollbacks come as scientists routinely determine pollution is far more damaging than previously ...

For a quarter of a century, a Black neighborhood in Beaumont, Texas, where Chris Jones lives has been the subject of two ...

South Africa has granted exemptions to eight coal-fired power plants, allowing them to exceed air pollution and emissions ...

The survey was initiated on March 15 and so far, MPCB officials have visited nearly 100 RMC plants to check whether (or not) ...