Sun giving way to increasing clouds
Rises at 7:18 AM with 9:33 of sunlight, then sets at 4:51 PM
Rises at 4:44 PM with 14:36 of moolight, then sets at 7:20 AM
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.