Environmental Studies

Contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates) in concentrations that endanger health.

Human-created noise harmful to health or welfare.

The radioactive and toxic by-products of the nuclear energy and nuclear weapons industries.

Oil discharged from an ocean-going tanker, pipeline, or oil installation, often as a result of damage.

The concept of pollution consists of the inappropriate or undesirable mixing of items or elements that may in themselves be quite appropriate or desirable.

Smog (smŏg) [smoke+fog], dense, visible air pollution. Smog is commonly of two types.

Contamination of water resources by harmful wastes; see also sewerage, water supply, pollution, and environmentalism.