Navajo people traveling through the Canyon de Chelly in 1904. This famous picture of the seven riders on horseback and their dog was taken by American photographer Edward Sheriff Curtis. Curtis was best known for his studies of Native Americans. He spent more than thirty years of his life photographing them.
Dust clouds rolling in on a small town during the Dust bowl in the 1930s. The Dust Bowl, also known as the “Dirty Thirties”, was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s. Severe drought and a failure to apply dryland farming methods to prevent wind erosion were primary causes of the phenomenon.