SQ events

Another name for a dust storm

A dust storm struck Washington, D.C., prompting the passage of some legislation

The era when the global population reached 200,000; involved humans mastering the use and purification of metals

A period of drought and wind erosion in the United State’s Great Plains in the 1930s

A period of economic struggles in the 1930s

A landslide in Wyoming that was triggered by downhill bedding patterns

Landslides that were triggered by earthquakes in British Columbia, covering Canada’s Highway 3

An economic development that led to a skyrocketing population

An atmospheric-oceanic phenomenon that lowers ocean surface temperatures

The era when the global population doubled from that of the Bronze Age

A landslide moving billions of cubic feet of material

A global conflict that triggered growth in the agricultural sector