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Why are gas prices at a four-year low?

Name: Why are gas prices at a four-year low?
Uploaded: 2014-10-27T18:43:00-0400
Duration: 1 min 57 s
Description: Since late June, the price of gasoline has fallen to a nationwide average of $3.04 -- the lowest in four years. Don Dahler reports on the cause and effect.

Since late June, the price of gasoline has fallen to a nationwide average of $3.04 -- the lowest in four years. Don Dahler reports on the cause and effect.