The Sahara was once home to hippos.

China is rebuilding the Great Wall of China. However, now they build not with stones, mortar, sand and rubble, designed to ...

Aimed at halting desertification and meeting climate goals, the project to create a 1,400-kilometre green wall faces major ...

For centuries, hundreds of millions of people have relied on desert wetlands that are now disappearing. Can blending ancient ...

With a population of 44 million, Algeria is the tenth-most populous country in Africa, and the 33rd-most populous country in ...