POPSUGAR Home Holiday Guess What Type of Lights Are on the National Christmas Tree? by Home 12/15/09 0 Shares Like us on Facebook Sign up for our daily newsletter > Follow us on Pinterest This year, the National Christmas Tree is lit from tip to bottom with a type of energy-saving light. Can you guess what these lights are? Image Source: Getty Read More Energy EfficiencyEco Living TipsChristmas TreeHolidayGuess Who Holiday 40+ Life-Changing Books to Read This Year 11 Spiked and Spiced Apple Cider Recipes 66 Things to Be Grateful For, Big and Small You're Going to Want to Slow-Cook This Dessert ASAP POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Get Inspired With Our Living Newsletter Personalize Love and Sex Food DIY Home Vegetarian Tech Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR.