
Water
An adequate supply for agriculture, industry and people depends on human intervention in the water cycle and the development of water resources not only on the surface but also in the ground

Water
An adequate supply for agriculture, industry and people depends on human intervention in the water cycle and the development of water resources not only on the surface but also in the ground

Underground Reservoirs to Control the Water Cycle
At any one time perhaps two-thirds of the fresh water on the earth is held in underground reservoirs. These reservoirs could be much more intensively drawn on, to be refilled when water is plentiful

Water under the Sahara
Below the arid surface of the great desert are huge natural reservoirs of water. These resources are now beginning to be studied and exploited for the benefit of the Saharan nations