Halloween is one of the most Eco-Unfriendly times of the year. Mom-daughter eco warriors Lynn Colwell and Corey Colwell-Lipson have taken the holiday on with Green Halloween and the National Costume Swap Day. They are also co-authors of Celebrate Green! Creating Eco-Savvy Holidays, Celebrations and Traditions for the Whole Family and founders of the non-profit Green Halloween initiative. Learn how to make your Halloween fun less harmful for the planet. Check out the locations in your area that might be holding a costume swap or learn how to hold one in your area!