"blech:  Berlin at night from space, with the old west and east still visible:  ""Berlin was divided into two parts for over 40 years,"" explains Christa Mientus-Schirmer of Berlin's city government. ""And although we've made a lot of progress in the 20 years since the wall fell, we haven't had the money we would have liked to equalise the two parts of the city."" Daniela Augenstine, of the city's street furniture department, says: ""In the eastern part there are sodium-vapour lamps with a yellower colour. And in the western parts there are fluorescent lamps – mercury arc lamps and gas lamps – which all produce a whiter colour."" The western Federal Republic of Germany long favoured non-sodium lamps on the grounds of cost, maintenance and carbon emissions, she says.  Guardian quote via chriswoebken."