I had been too, but then I googled it ;)
Earth hour is an hour brought into being by Greenpeace. In this hour, that is taking place every year, all public buildings switch off their lights and many private people also do for saving energy. This should be a sign that the world can reduce its energy use dramatically if it only wants to.
Lemberg - Baraque de Fraiture - Smolensk - Heiligenbeil - Nobel Dynamite Works - Lorient - Poltawa