Across the world on Saturday, lights are being switched off in cities as part of Earth Hour 2025. In New Delhi, crowds watched as the India Gate's multi-coloured lights were switched off. Earlier in Taiwan, the iconic Taipei 101 Building shut off its lights and in Hong Kong, skyscrapers by Victoria Harbour were plunged into darkness. Earth Hour is part of the Worldwide Fund For Nature's annual campaign to draw attention to the climate emergency.