"Earth Hour is still is the world's largest grassroots movement for people to take action on climate change", WWF Australia CEO Dermot O'Gorman told the Agence France-Presse news agency.
Joining in is easy: simply turn off your lights at 8:30 p.m. local time on 30 March.
While the lights-off event is a symbolic gesture, Earth Hour has led successful campaigns over the past decade to ban plastics in the Galapagos Islands and plant 17 million trees in Kazakhstan. Today, people take part in more than 180 countries and territories. Internationally, the event was held on March 29, 2008, from 8 p.m.to 9 p.m. local time, marking the first anniversary of the Australian event and 35 countries around the world participated as official flagship cities with over 400 cities in support.
"It's important to focus on what we can do to reduce our greenhouse gas emissions and avert climate catastrophe", May said.
It's time to think more seriously about a no-deal Brexit
Responding to the development, the European Commission has said that the EU was now "fully prepared" for a no-deal Brexit. The European Commission said that it is likely the two sides will be unable to negotiate a deal over the next two weeks.
In addition to switching off the electric lights to mark the Earth Hour, there are several fun activities that can be organised to spend the hour.
Partit Demokratiku will be celebrating Earth Hour by candlelight in the village square of Mqabba at a pub on Triq San Bażilju.
Over 3,000 corporations in Hong Kong signed up for Earth Hour 2019, according to the WWF Hong Kong website.
Cities around the world, including Johannesburg, South Africa, are also encouraging citizens to take part in the movement and collectively help protect the planet. But each of the individuals who participate in Earth Hour has decided their ambition is higher, and I believe this changes the game entirely.