From Breitbart, Australia kicks off Earth Hour climate campaign

The 25-hour energy-saving marathon officially began in Sydney shortly after 0930 GMT with a spectacular switch to darkness for an hour before spreading across the world for more than 80 countries to take part at 8:30 pm local time.

Millions in the harbourside city appeared to observe the hour without light to mark Earth Hour, a global grassroots movement that began in Sydney two years ago, when 2.2 million people switched off their lights.

It has since grown to include 3,929 cities, villages and localities across the globe.

It gets an international response:

Some 371 landmarks will power down the world over including the Vatican, Niagara Falls, the Eiffel Tower, the Empire State Building, the Las Vegas casino strip, the Acropolis and Beijing’s “Bird’s Nest” Olympic stadium.

Hong Kong’s glittering waterfront and more than 1,500 buildings were to dim their lights, including many of the city’s skyscrapers such as the Bank of China Tower, HSBC’s headquarters and the giant International Finance Centre 2.

The city would also suspend its daily light show for the first time.

Mountaineers were even expected to raise an Earth Hour flag on the 8,848-metre (29,000-foot) summit of Everest, the planet’s highest point, with the event to end in Honolulu, capital of the US state of Hawaii.

The purpose?

But Ridley said the overwhelming response to the event — including participation by emerging, high-emissions economies such as Brazil, India and China — would show there was a mandate for tough action on climate change.

A good reason to vote for humanity by turning on your lights from 8:30 to 9:30 p.m. tonight.