Fog is at atmospheric phenomenon that occurs many places, including here in the Southeast, but for some places like San Francisco, fog is a necessary part of the ambiance of the environment as well as an important source for moisture during the dry season. But fog is becoming less frequent in the coastal areas of California, causing issues for the ecosystems there that depend on it as well as changing the character of San Francisco. The New York Times has a long and very interesting story about how the frequency of fog is changing on the West Coast and what it means for that region.
