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Mostly cloudy, showers around
A full day of sunshine
of sunlight, then sets at
of moolight, then sets at
A new storm will swing up from the Southwestern states, bringing another dose of accumulating snow to Philadelphia Tuesday. more >
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.