An epic journey along Africa's Great Green Wall — an ambitious vision to grow a wall of trees stretching across the entire continent to fight against increasing drought, desertification and climate change.

The Great Green Wall

It’s simple math: we can burn less than 565 more gigatons of carbon dioxide and stay below 2°C of warming — anything more than that risks catastrophe for life on earth. The only problem? Fossil fuel corporations now have 2,795 gigatons in their reserves, five times the safe amount. And they’re planning to burn it all — unless we rise up to stop them.