The analysis, released last week, said key biodiverse sites around the world projected to be most affected by localised extinction include the Amazon, the world’s largest tropical rainforest, and southern Africa’s Miombo Woodlands.
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.
Sydneysider Dianna Ali, who was having dinner with family as the lights went off in the city, said the initiative had made her more aware of the impact of her lifestyle on the planet’s health.
“Since Earth Hour started, it’s made me more conscious of how much power I’m using,” she told AFP.
“I think… about how much one individual can make a difference.”