Earth Day, celebrated annually on 22 April, will again see more than 1 billion people participating in activities around the world to draw attention to the urgency of the climate crisis and environmental degradation and the need for immediate action. Many important environmental events have happened on Earth Day since its inception in 1970, including the signing of the Paris Agreement in 2016. The theme for this year – the second Earth Day Live digital event - is: Restore our Earth.