What is Earth Hour?
Millions of people, businesses and governments around the world unite each year to support the largest environmental event in history – Earth Hour.
In Earth Hour 2012, more than 7,001 cities and towns in 151 countries around the world switched off their lights to send a powerful message for action on climate change. It also ushered in a new era with members going Beyond the Hour, as they commit to lasting action for the planet.
This year, Earth Hour 2014 will take place on 29 March, Saturday at 8.30 pm.