Earth Hour is born in Sydney, Australia on 31 March. The campaign unites 2.2 million Australians and delivers a strong and unmistakable message that climate change is an issue they care deeply about.
Earth Hour goes international. Nearly 400 cities in 35 countries participate in this global campaign, with major landmarks like the Golden Gate Bridge in San Francisco and the Colosseum in Rome going dark during Earth Hour.
Earth Hour breaks all records for mass participation, becoming the world’s largest movement for the environment. Hong Kong begins to mark Earth Hour. Prominent city landmarks including the International Finance Centre, the Cultural Centre and the Tsing Ma Bridge go dark for one hour, while the Symphony of Lights show
Taking place three months after the COP15 meeting in Copenhagen, widely regarded as a major setback to international climate change efforts, Earth Hour becomes a global call to action for a sustainable future.
The “Plus” sign is incorporated into the Earth Hour logo, signifying the campaign’s evolution beyond the hour.
After a petition launched by WWF-Russia for Earth Hour collects over 120,000 signatures, Russia passes a law which creates better protection from oil pollution for the country’s seas.
Fundación Vida Silvestre Argentina uses Earth Hour to mobilize support to create the country’s largest marine protected area.
Following a powerful crowdsourcing campaign by Earth Hour, Ecuador’s Galapagos Islands – a UNESCO World Heritage site – become the country’s first province to pass a law prohibiting disposable plastic shopping bags and expanded polystyrene packaging.
A record breaking 172 countries and territories participate in Earth Hour.
Millions of people in 178 countries and territories celebrate the tenth Earth Hour.
Over 5,600 companies, organizations and buildings, and nearly 300 primary and secondary schools, took part in Earth Hour in Hong Kong.