(derogatory) The uncontrolled flow of genes into wild populations, as from domestic, feral, and non-native species.

plural of nocturnal pollution

(obsolete) nocturnal emission

plural of air pollutant

the presence of an undesirable sight that can ruin the aesthetic appeal of an area; the visually unattractive elements of a landscape.

Of an area, having too much artificial light including street lighting, which prevents stars etc. being seen in a clear night sky.

Organic compounds, predominantly synthetic, that are resistant to environmental degradation through chemical, biological, and photolytic processes, and that are often associated with health risks.

Is a principle referring to the idea that firms responsible for causing pollution should be charged the full external costs for the damage that it inflicts on society.

A system aimed at controlling pollution by allocating each firm a certain amount of pollution permits which allows them to pollute up to a certain limit. If firms pollute less, they are able to sell there permits to firms that pollute more hence creating a permits market.