In a year of unprecedented heatwaves, wildfires and flooding across the world, the need to address the drivers of climate change and help the people most affected is becoming urgent. This is why the World Economic Forum’s Trillion Trees initiative (1t.org) chose to back the African Union’s Great Green Wall Initiative for the Sahara and Sahel. 1t.org was set up in support of the United Nations Decade on Ecosystem Restoration, with the vision of conserving, restoring and growing 1 trillion trees by 2030.