Rises at 7:53 AM with 9:45 of sunlight, then sets at 5:38 PM
Rises at --:-- with of moolight, then sets at 12:01 PM
Dec 5, 2013; 5:00 AM ET December is a popular month to travel because of the holidays. Some of that travel is not helping the environment. Valerie Smock explains which mode of transportation is best for the Earth.