Our Turn is Coming.

Cities will go dark at 8 pm today for one earth-hour. Our participation comes this evening. Check our Goggle's splash screen today.

"What's amazing is that it's transcending political boundaries and happening in places like China, Vietnam, Papua New Guinea," said Earth Hour executive director Andy Ridley. "It really seems to have resonated with anybody and everybody."

Organizers see the event as a way to encourage the world to conserve energy. While all lights in participating cities are unlikely to be cut, it is the symbolic darkening of monuments, businesses and individual homes they are most eagerly anticipating.

"It is a wake-up call," said Sydney Lord Mayor Clover Moore. "We need to really plan for our future. (Earth Hour) is something we can all do together. Going global is very empowering."