Energy-saving LEDs boost light pollution worldwide

They were supposed to bring about an energy revolution—but the popularity of LED lights is driving an increase in light pollution worldwide, with dire consequences for human and animal health, researchers said Wednesday.

Christmas sky show

(Phys.org)—Just when you thought Christmas was over: At the end of the day on Dec. 25th, a pair of holiday lights will pop out of the deepening twilight. Jupiter and the Moon are having a Christmas conjunction.

Vietnam store makes Christmas tree from cellphones

(AP) -- Southeast Asia is closer to the equator than the North Pole, but an electronics store in Vietnam is ringing in the holidays with a 15-foot Christmas tree made from more than 2500 unusable cellular phones.