At least ten cities across Bulgaria will turn off the lights at their main buildings and streets to join the Earth Hour initiative, which will be held this year on March 26 at 20:30, the environment group WWF announced.

This will be the country's fourth participation in the event, which will be held under the patronage of the EU Commissioner for Humanitarian Aid and Crisis Response, Bulgarian Kristalina Georgieva.

On Earth Hour people around the world will switch off their lights and power appliances for one hour, the action being a mainly symbolical global call to action to every individual, business and every community throughout the world to save energy and help prevent the deterioration of the global climate.

The idea behind it is for people to gather, to spend some time with friends in "peace and quiet", and have time to reflect on "themselves and their lives", according to the WWF.

The idea for Earth Hour originated in 2007 in Sydney, Australia, when 2,2 million homes and businesses turned their lights off for one hour to make their stand against climate change.

The Australian initiative proved highly popular around the world and a year later Earth Hour had become a global sustainability movement with more than 50 million people across 35 countries joining in.

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