"During the First World War, the price of wheat went through the roof, and one of the best places to farm it was in northern Texas and western Oklahoma. These expansive, dry states were thought too parched to farm, but turned out to have vast stores of water in underground reservoirs. After clearing the native grasses, farmers discovered the land was so rich that some only visited the state for planting and harvest and still made a fortune. Ten years of soil-stripping farming later, the crops dried up, and the newly-exposed soil got carried away in storms so huge they half-buried houses. Then the jack rabbits came. The rabbits were migratory, came in "herds," and reproduced every 32 days. They ate everything that grew, starving the people and cattle who stayed on the lands. Farming and ecological disaster had eliminated many of their predators, and their population just kept expanding. In 1935, there were an estimated 8,000,000 rabbits in western Kansas alone." - Jessie

Ah, yes. The Great Darkness. - Steven Perez