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Desert Power 2050: Dii - Bringing the Desertec vision into reality

The DESERTEC vision: The deserts would enable a secure, sufficient and affordable energy delivery for a world of 10 billion people from clean and inexhaustible sources.
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Atlantropa - Wikipedia

Atlantropa, also referred to as Panropa,[1] was a gigantic engineering and colonization project devised by the German architect Herman Sörgel in the 1920s and promulgated by him until his death in 1952. Its central feature was a hydroelectric dam to be built across the Strait of Gibraltar, which would have provided enormous amounts of hydroelectricity[2] and would have led to the lowering of the surface of the Mediterranean Sea by up to 200 metres (660 ft), opening up large new lands for settlement, for example in a now almost totally drained Adriatic Sea.

Sörgel saw his scheme, projected to take over a century, as a peaceful European-wide alternative to the Lebensraum concepts which later became one of the stated reasons for Nazi conquest of new territories. Atlantropa would provide land and food, employment, electric power, and most of all, a new vision for Europe and neighbouring Africa.

The Atlantropa movement, through its several decades, was characterised by four constants:[3]

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Qattara Depression Project - Wikipedia

The Qattara Depression Project, or shortly the Qattara Project, is a large civil engineering project rivaling the Aswan High Dam intended to develop the Qattara Depression by flooding it. The depression is a region that lies below sea level and is currently a vast desert. By connecting the region and the Mediterranean Sea with tunnels and/or canals, water could be let into the area. The inflowing water would then evaporate quickly because of the desert climate. This way a continuous flow of water could be created if inflow and evaporation were balanced out. With this continuously flowing water hydroelectricity could be generated. Eventually this would result in a hypersaline lake or a salt pan as the water evaporates and leaves the salt it contains behind.

The proposals call for a large canal or tunnel being excavated of about 55 to 80 kilometres (34 to 50 mi) depending on the route chosen to the Mediterranean Sea to bring seawater into the area.[1] Or otherwise a 320 kilometre (200 mile) pipeline north-east to the freshwater Nile River at Rosetta.[2][3] By balancing the inflow and evaporation the lake level can be held constant. Several proposed lake levels are -70, -60, -50 and -20 m.

Plans to use the Qattara Depression for the generation of electricity date back to 1912 from Berlin geographer Professor Penck.[4] In 1957 the American Central Intelligence Agency proposed to President Dwight Eisenhower that peace in the Middle East could be achieved by flooding the Qattara Depression. The resulting lagoon, according to the CIA, would have four benefits:[5]

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