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Water pollution (or aquatic pollution) is the contamination of water bodies, with a negative impact on their uses. [1] : 6 It is usually a result of human activities. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants mix with these water bodies.
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]
A cargo ship discharging ballast water into the sea. Ballast water discharges by ships can have a negative impact on the marine environment. Cruise ships, large tankers, and bulk cargo carriers use a huge amount of ballast water, which is often taken on in the coastal waters in one region after ships discharge wastewater or unload cargo, and discharged at the next port of call, wherever more ...
Today the U.S. Department of Education named the 2022 U.S. Department of Education Green Ribbon Schools, District Sustainability Awardees, and Postsecondary Sustainability Awardees. Across the country there are 27 schools, five districts, and four postsecondary institutions that are recognized. These honorees employ innovative practices and policies to reduce environmental impact and utility ...
Microplastics have been found in the ocean and the air, in our food and water. Dr. Marya Zlatnik, a San Francisco-based obstetrician who has studied environmental toxins and pregnancy, has seen ...
Childhood is a particularly sensitive time when it comes to pollution exposure. Allison Larr and Matthew Neidell focus on two atmospheric pollutants—ozone and particulate matter—that can harm children’s health in many ways. Ozone irritates the lungs, causing various respiratory symptoms; it can also damage the lung lining or aggravate ...
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 ...
Quality. Air pollution is air pollution, indoors or out. Good indoor air quality (IAQ) contributes to a favorable learning environment for students, protects health, and supports the productivity of school personnel. Over the past 40-50 years, indoor air pollution has increased due to a variety of factors, including the con-struction of tightly ...