On 29 March from 8pm, Christchurch joins 23 cities worldwide in turning off their lights for climate change. Earth Hour was first held in Sydney last year and was organised by the World Wide Fund for Nature (WWF) and the Sydney Morning Herald. Cities taking part in this year’s Earth Hour include Bangkok, Chicago, London, Montreal and Tel Aviv. Christchurch Mayor Bob Parker is excited about the chance for Christchurch to continue its standing as an environmental leader in New Zealand. “As the first council in New Zealand to write and adopt a sustainable energy strategy, and to have reduced its energy use by 30 per cent over the last decade, our citizens are already playing a key role in moving towards a more sustainable future,” Parker said.