It is in semi-arid regions, where long periods of drought may be followed by torrential rains, that soil erosion becomes an active danger.

Inspired by the secret to the Nile Delta’s fertility, engineers are using a concoction of clay, water and local soils to grow fruits in the desert. In March this year, just as countries across ...

Regions particularly characterized as arid and semi-arid lands begin ... both droughts and poor soil will notice the water evaporate at a faster rate. As bodies of water begin to dry, the land begins ...