Google observing the Earth hour by turning out the lights
Google Israel is observing the Earth Hour and urging all Israeli’s to do so. They have changed their home page to an all black theme to remind everyone to turn out their lights as well for an hour. This is not an attempt to reduce emissions by Google (by changing to a black theme); in fact, it is not clear that a black UI actually reduces electricity consumption (as many people believe). All I wonder is why 
Google Israel only? Why not others or why not Google.com?
Anyway, I think that the gesture is great nevertheless. As one of the most eyeballed pages on the Internet, Google can have a huge impact on the awareness of initiatives such as the Earth Hour. Way to go, Google!
In case the page is back to normal and you wish to see it in its black glory, I froze the page here.