Earth Hour was first started as a lights-off event in Sydney, Australia, in 2007.
Everyone can join in WWF's Earth Hour on Saturday 25 March 2017.
The event is held towards the end of March worldwide to encourage individuals, households, communities to switch off their lights and thus show their commitment to the planet. "Our efforts certainly won't stop with Earth Hour, and we have every intention of meeting our goal of an 8 per cent reduction in our greenhouse gas emissions over the next 10 years".
Despite the terror attack in Westminster on Wednesday, the Houses of Parliament and Big Ben are joining more than 270 landmarks across the United Kingdom in switching off the lights for conservation charity WWF's Earth Hour. Last year, Delhi saved 229MW of power and 200MW of power in the year 2015.
With the aim to unite people to protect the planet, Earth Hour highlights the need to act on climate change and to contribute in making the earth a better place to live. Earth Hour is not just about saving an hour's electricity.
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This year it turns a decade old and monuments like Big Ben, The Gherkins, The Eiffel Tower, Sidney Opera House and Bangkok Grand Palace will be on a total black-out for an hour!
According to the World Wide Fund for Nature, the Philippines has been championing the switch-off since 2008 and has topped global participation records from 2009 to 2012 - earning it the title of Earth Hour Hero Country.
The Kelpies sculpture in Falkirk and Edinburgh Castle join Buckingham Palace, Blackpool Tower, Brighton Pier, the Senedd Building in Cardiff among those also taking part. You can turn off your lights tonight for an hour, but you also can help local environmental organizations with donations or by volunteering.
Recent research by WWF reveals that Australian kids have clear views about climate change, expressing concerns about the impact of global warming and issues relating to the environment.
After Earth Hour has finished and you have blown out all your candles, Newman said to be sure to recycle the glass jars used for the candles, as well as all any other glass bottles.