CJ Liu

In 2011, Earth Hour saw hundreds of millions of people across 135 countries switch off for an hour. But it also marked the start of something new going Beyond the Hour to commit to lasting action on climate change. In 2012, Earth Hour celebrated its largest event to date with more than 6,950 cities and towns in 152 countries and territories switching off their lights, and with hundreds of thousands of people accepting an IWIYW challenge to take their commitment to the planet beyond the hour. Find out what is in store for 2013 and be part of the change.