the act of polluting or the state of being polluted
Even the most ardent environmentalist doesn't really want to stop pollution … He wants to have the right amount of pollution — Milton Friedman
material that pollutes
Pollution is harmful change in the environment caused by human activity (but of course ‘harm’ is organism-dependent). Rachel Carson is widely recognized as having started the modern environmental movement with her book Silent Spring (1962) in which she pointed out the polluting effects of industrial farming practices, leading to the banning of DDT and to changes in the way we treat air, soil and water – Professor Andrew Dobson