/technologies/robotics/b/blog/posts/shedding-light-on-a-holiday-tradition-christmas-lights-and-edward-johnsonThe first Christmas tree with lights, by Edward H. Johnson from 25 Dec. 1882 (via US National Park Service ) Tis' the season when you can see lit Christmas trees in windows, rows of houses with glowing Santa with his reindeer on the front lawn. L...en-USTelligent Community 12