Since our beginnings in 2007, Earth Hour has been known for the “lights off” moment. There are individuals around the world switching off their lights to show symbolic support for the planet. Earth Hour raises awareness of environmental issues. More than 15 years later, we now face a tipping point with our climate and nature crises, which are putting the future of our planet at risk. We are on track to exceed the 1.5°C global temperature limit set by the Paris Climate (A) by 2030. Nature, which is vital for our survival and one of our greatest allies (B) the climate crisis, is also in serious danger, facing alarming and unprecedented rates of loss globally. The next seven years are crucial for our future. We must stay under the 1.5°C climate threshold to avoid irreversible damage to our planet. And we need to reverse the loss of nature. We must end this (a)decade with more nature than we started, not less. To achieve this, individuals, communities, businesses, and governments must urgently step up their efforts to protect and restore our shared home. With the 2030 goal in mind, we must also take action. In 2023, we breathed new life into Earth Hour – our brand, our work, our message, and our mission. We launched the Biggest Hour for Earth by calling on our global supporters to switch off their lights. And we let them use an hour for Earth, spending 60 minutes doing something (C) for the planet. In a world where societies are becoming more divided and polarized, the Biggest Hour for Earth offers a moment of unity. It serves as a reminder that our shared home needs our help and that we all have a role to play in protecting it.