Search results
Results from the WOW.Com Content Network
The Environmental Protection Agency ( EPA) is an independent agency of the United States government tasked with environmental protection matters. [2] President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on December 2, 1970, after Nixon signed an executive order. [3] The order establishing the EPA was ...
The United States Environmental Protection Agency (EPA) began regulating greenhouse gases (GHGs) under the Clean Air Act ("CAA" or "Act") from mobile and stationary sources of air pollution for the first time on January 2, 2011. Standards for mobile sources have been established pursuant to Section 202 of the CAA, and GHGs from stationary ...
Environmental protection. Environmental protection is the practice of protecting the natural environment by individuals, groups and governments. [1] Its objectives are to conserve natural resources and the existing natural environment and, where it is possible, to repair damage and reverse trends. [2]
The Pollution Prevention Act of 1990 ( PPA) is a United States federal law that created a national policy to promote the prevention of pollution or reduction at pollution sources wherever possible. [1] The law also expanded the Toxics Release Inventory (TRI), a waste reporting program administered by the United States Environmental Protection ...
According to data by the Environmental Protection Agency, carbon dioxide accounts for 65 percent of all global greenhouse gas emissions, and it primarily comes from the production and combustion ...
Though the greenhouse effect is heavily driven by water vapor, human emissions of water vapor are not a significant contributor to warming. Although CFCs are greenhouse gases, they are regulated by the Montreal Protocol which was motivated by CFCs' contribution to ozone depletion rather than by their contribution to global warming. Ozone ...
Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [1] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological agents ...
Pollution is the introduction of contaminants into the natural environment that cause adverse change. [1] Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring ...