Lifestyle / Christmas Trees / Eastern White Pine: Beginning with the British colonists, eastern white pine (or white pine) has proven to be one of the most important and most desirable species of North America. It is a truly magnificent tree attainin MORE
Business / Agriculture / Bioaccumulation: The absorption and concentration of toxic chemicals, heavy metals, and certain pesticides in plants and animals. Toxicity can be expressed in several ways: lead that is ingested by calves can bioaccum MORE
Science / Biology / Smog: A local alteration in the atmosphere caused by human activity; mainly an urban problem that is often due to pollutants produced by fuel combustion. MORE
Science / Biology / Bronchitis: A respiratory disorder characterized by excess mucus production and swelling of the bronchioles; caused by long-term exposure to irritants such as cigarette smoke and air pollutants. MORE
Business / Agriculture / Dioxin: Any of a group of toxic chlorinated compounds known chemically as dibenzo-p-dioxins (or the most toxic of these compounds, 2,3,7,8 tetrachloro dibenzo-p-dioxin). They are produced inadvertently as a b MORE
Business / Real Estate / Federal Water Pollution Control Act: Enacted by Congress in 1972, this federal law administered by the EPA regulates the release of pollutants into navigable waters. MORE