[German scientists advise] that the bulbs should not be left on for extended periods, particularly near someone’s head, as they emit poisonous materials when switched on.
Peter Braun, who carried out the tests at the Berlin's Alab Laboratory, said: "For such carcinogenic substances it is important they are kept as far away as possible from the human environment."
Several carcinogenic chemicals and toxins are released when the environmentally-friendly compact fluorescent lamps (CFLs) are switched on, including phenol, naphthalene and styrene.
Andreas Kirchner, of the Federation of German Engineers, said: "Electrical smog develops around these lamps."
Polistra was named after the original townsite of Manhattan (the one in Kansas). When I was growing up in Manhattan, I spent a lot of time exploring by foot, bike, and car. I discovered the ruins of an old mill along Wildcat Creek, and decided (inaccurately) that it was the remains of the original site of Polistra. Accurate or not, I've always liked the name, with its echoes of Poland (an under-appreciated friend of freedom) and stars. ==== The title icon is explained here. ==== Switchover: This 2007 entry marks a sharp change in worldview from neocon to pure populist. ===== The long illustrated story of Polistra's Dream is a time-travel fable, attempting to answer the dangerous revision of New Deal history propagated by Amity Shlaes. The Dream has 8 episodes, linked in a chain from the first. This entry explains the Shlaes connection.