"LEDs Offer More Efficient Technology than Incandescent Lights and CFLs:
According to HowStuffWorks.com, LED bulbs are lit solely by the movement of electrons. Unlike incandescents, they have no filament that will burn out; and unlike CFLs, they contain no mercury or other toxic substances. Proponents say LEDs can last some 60 times longer than incandescents and 10 times longer than CFLs. And unlike incandescents, which generate a lot of waste heat, LEDs don’t get especially hot and use a much higher percentage of electricity for directly generating light."
"is the first year that custom ornaments are not being used on the National Christmas Tree. Today’s LED ornaments are not only energy efficient and long lasting; they’re also very beautiful--even during the day when they are not lit. They can enhance any holiday lighting design,” said Mary Beth Gotti, Manager of the GE Lighting Institute in Cleveland, Ohio. (quoted from http://www.thenationaltree.org/tree-lighting/making-tree-green/)
Your branches green delight us.
They are green when summer days are bright;
They are green when winter snow is white.
O Christmas Tree, O Christmas Tree,
Your branches green delight us!