Energiesparlampen – die Zeitbomben in Ihrer Wohnung
In Millionen Haushalten lagern tickende Zeitbomben. Denn das Leuchtmittel in Energiesparlampen besteht aus hoch giftigem Quecksilber. Per...
How many lightbulbs are there in the world
There are still about 8 billion common light bulbs in use, worldwide. By an average wattage of 40 Watts per bulb, they consume about 53...
