Smog
Renewable Energy
A visible haze caused by particulate matter and ground-level ozone.
- — ODOE Glossary of Energy Terms retrieved 2014-06-15
Weather
Originally smog meant a mixture of smoke and fog. Now, it means air that has restricted visibility due to pollution or pollution formed in the presence of sunlight--photochemical smog.
Climate Change
Smog A word currently used as a synonym for general air pollution. It was originally created by combining the words "smoke" and "fog."