Erg Chebbi Erg Chebbi Erg Chebbi () is one of Morocco's several ergs – large seas of dunes formed by wind-blown sand. There are several other ergs such as Erg Chigaga near M'hamid. Technically all these ergs are within an area of semi-arid Pre-Saharan Steppes and not part of the Sahara desert which lies some distance to the south. In places, the dunes of Erg Chebbi rise up to 150 meters from the surrounding hamada (rocky desert) and altogether it spans an area of 28 kilometers from north to south and up to 5–7 kilometers from east to west lining the Algerian
Is Geography Destiny? and Portuguese. Is Geography Destiny? Is Geography Destiny? Lessons from Latin America is a book written by John Luke Gallup, Alejandro Gaviria, Eduardo Lora and published by the Inter-American Development Bank (IDB), which documents an advanced step of the rediscovery of geography by economists initiated by Paul Krugman in the early 1990s, however in another, more deterministic direction. Inspired by the works of David Landes, Jared Diamond and Jeffrey Sachs, considered as “champions of the rediscovery of geography”, the book is the result of “a series of studies on the influence of geography on Latin American development”. It is part