Harnessing collective human power to alter climate change, millions of people all over the world will turn off the lights for 60+ minutes on March 28 at 8:30 p.m. as part of Earth Hour – an annual event that aims at raising environmental awareness, achieving an impact and changing policy.  

To save the planet from the devastating impact of climate change, the charitable Singapore-based organization, Earth Hour, succeeded in engaging individuals, organizations and businesses in more than 7,000 cities and 162 countries in 2014 alone. The 2015 event marks the ninth anniversary of Earth Hour.  

Founded by the World Wildlife Federation (WWF) in Australia, Earth Hour has grown to become the world's biggest grassroots environmental movement.

Major landmarks go dark as part of Earth Hour every year. Lights go off at the Sydney Opera House, Pyramids, Eiffel Tower, Empire State Building, Las Vegas Strip and many other landmarks.

The virtual sphere stands in solidarity with this global cause with Google changing the homepage background to black. "We've turned the lights out. Now it's your turn," Google stated on its black background homepage in 2008.

“Climate change is not just the issue of the hour, it's the issue of our generation,” says Sudhanshu Sarronwala, Board of Directors Chair of Earth Hour Global in a press release published by the organization on its website.

The Earth Hour Tracker displays the hour's activities at places in proximity with visitors' geographical area. People, organizations and businesses can also create their event and share it with millions.

“Earth Hour is the world’s most enduring people’s movement focused on climate. The lights may go out for one hour, but the actions of millions throughout the year will inspire the solutions required to change climate change,” Sarronwala says.