Earth Day 2025 Australia Theme. Its big picture, why it’s important, and how you can get involved. 2025 marks the 55th anniversary of earth day, and to honor this milestone, we are inviting our one billion supporters in 192 countries to unite behind renewable energy, with the goal of.

The theme highlights a new challenge every year, and the theme for this year is ‘climate change’, according to earth day network. Every year earth day has a theme.