Each time you reach the top or bottom, turn the lights back the other way until you have a sideways S pattern around the ...

Christmas lights dress up a holiday tree, making it twinkle and glow. It takes some practice to distribute these tree lights evenly without burnt-out bulbs, lights clumped in some spots (and missing ...

How the first Christmas tree lights were designed and utilized. Learn about the technology involved in creating the display. How a campaign brought Christmas tree lighting to the masses. It had only ...