For the tenth year, lights went out around the world to mark Earth Hour – a worldwide movement organized by the World Wildlife Fund.
During Earth Hour, people around the world are encouraged to turn out their lights for a designated hour to “shine a light on the climate action our planet needs”, according to organizers.
This year on March 19 from 8:30 to 9:30 pm, the lights went out in 178 countries and territories and more than 400 iconic landmarks dimmed their lights, according to a press release. The lights were turned off at the Eiffel Tower in Paris, the Sydney Opera House, Big Ben and the Houses of Parliament in London, the Tokyo Tower, the Empire State Building in New York and many other well-known sites.
Earth Hour began in Sydney, Australia in 2007 and has grown into “the world’s largest grassroots movement for the environment”.
Watch a time-lapse video of the lights going out in Hong Kong here.