December 11, 2013; 5:08 AM ET
The coldest air of the season so far is moving in for the middle of this week around Boston, in the wake of Tuesday's snowstorm. A new storm will move in this weekend. more >
Rises at 7:04 AM with 9:08 of sunlight, then sets at 4:12 PM
Rises at 12:49 PM with 13:30 of moolight, then sets at 2:19 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.