Image credit: Earth hour

Earth Hour is a worldwide movement for the planet organized by the World Wildlife Fund (WWF). The event is held worldwide annually encouraging individuals, communities, households and businesses to turn off their non-essential lights for one hour, from 8:30 to 9:30 p.m. on the last Saturday in March, as a symbol for their commitment to protect the planet. (FAQ, n.d.)

Launched in Australia in 2007, WWF says Earth Hour has now grown to become the world’s biggest environmental event, mobilising people around a range of issues from deforestation to energy efficiency.