Hansen, Zeynep K.; Libecap, Gary D. - 2021
environmental crises in North America in the 20th Century. Severe drought and wind erosion hit the Great Plains in 1930 and lasted … through 1940. There were similar droughts in the 1950s and 1970s, but no comparable level of wind erosion. We explain why. The … erosion. Drifting sand from unprotected fields damaged neighboring farms. Small farmers cultivated more of their land and were …