Started by Australia in 2007, Earth Hour is an annual event in which lights are switched off for an hour in major cities around the world to draw attention to energy consumption and its environmental effects. Columbia People light candles and form a “60+” sign during the Earth Hour environment campaign in Colombia. Earth Hour, which started in Australia in 2007, is being observed by millions of supporters in 187 countries, who are turning off their lights at 8.30 p.m. local time in what organizers describe as the world’s “largest grassroots movement for climate change.” Luis Robayo/AFP/Getty Images

Source: Washington Post March 25, 2018 18:33 UTC