Campaigners across the world are marking Earth Hour
Saving the planet, 60 minutes at a time. Campaigners across the world are marking Earth Hour. The annual enviromental campaign is designed to save energy resources and make the most of renewable power.
Most people do this by switching off lights and electrical appliances. But that's not the only activity. In the Philippines, a chance to burn off some extra calories - whilst powering an LED map of the island.
Ria Adoracion Lambino: "What we have here is a symbolic action wherein we have bikers trying to light up the Philippine map. Okay, if one of these bikers stop biking, then the map will not light up, so we're saying together, where possible, we're harnessing human energy, human power to be able to power the Philippines, symbolic for saying we can use our own power to light up the Philippines and also the world."
Some of the world's most famous landmarks are also plunged into darkness. These include the Eiffel Tower in Paris, the Sydney Opera House and Brazil's Christ the Redeemer statue. Several key structures in Kyiv including the Ministry of Foreign Affairs Building and Motherland Statue also join in.