Patagonian Desert albeit to the west, where precipitation is higher, bushes are replaced by grasses. Topographically the deserts consist of alternating tablelands and massifs dissected by river valleys and canyons. The more western parts of the steppe host lakes of glacial origin and grades into barren mountains or cold temperate forests along valleys. Inhabited by hunter-gatherers since Pre-Hispanic times, the desert faced migration in the 19th century of Mapuches, Chileans, Argentines, Welsh, and other European peoples, transforming it from a conflictive borderland zone to an integral part of Argentina, with cattle, sheep and horse husbandry being the primary land uses. The Patagonian
Twilight in the Desert Twilight in the Desert Twilight in the Desert: The Coming Saudi Oil Shock and the World Economy is a book by American investment banker Matthew Simmons. The text was initially published on June 10, 2005 by John Wiley & Sons. The book focuses on the petroleum industry of Saudi Arabia and posits that this country is approaching—or already at—its peak oil output and cannot substantially increase its oil production. —Review on theoildrum.com Simmons' prediction of rising oil prices made in "Twilight in the Desert" led to a bet with "New York Times" columnist John Tierney in August 2005. The two