December 10, 2013; 3:35 PM ET
The coldest air of the season will settle into the Washington, D.C., area at midweek, followed by another storm this weekend. more >
Rises at 7:16 AM with 9:29 of sunlight, then sets at 4:45 PM
Rises at 1:16 PM with 13:23 of moolight, then sets at 2:39 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.