NATIONAL GEOGRAPHIC JUNI 1991 EDITIE ENGELS TIJDSCHRIFT

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NATIONAL GEOGRAPHIC JUNI 1991 EDITIE ENGELS TIJDSCHRIFT.

GEOJUNI1991.

Water and the West: The Colorado River { The Colorado: A River Drained Dry; Age- old Challenge: Water and the West } Increasing demand and persistent drought have drawn the reservoirs of the Colorado River system, a critical water source for seven states and part of Mexico. Secrets of Animal Navigation How does a bird migrate to a destination it has never seen, a salmon return to the stream where it was spawned? Scientists search for the internal compass and map that guide such long- distance journeys. The Wonderland of Lewis Carroll Behind the celebrated pen name was the shy Oxford mathematician Charles Lutwidge Dodgson, who stepped through the looking- glass with his character Alice to create classic stories for children. East Europe’s Dark Dawn: The Iron Curtain Rises to Reveal a Land Tarnished by Pollution Nations freed from decades of communist rule and unrestricted industrialization confront a harrowing legacy: air, water, and land deadened by pollution. Bats- -The Cactus Connection To the Sonoran Desert’s lesser long- nosed bats, cactus flowers and fruits are irresistible. To the cactus, the bats are irreplaceable – – as pollinators and seed dispersers.(COPY)