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People who live in tornado, hurricane, flood, wildfire, earthquake or heavy snowfall areas and want to be prepared for possible emergencies. They invest in material for fortifying structures and tools for rebuilding and constructing temporary shelters. While assuming the long-term continuity of society, some may have invested in a custom built shelter, food, water, medicine, and enough supplies to get by until contact with the rest of the world resumes following a natural emergency.

preppers

American Preppers Get Ready For the Worst

This group is concerned with weather cycles of 2–10 years, which have happened historically and can cause crop failures. They might stock several tons of food per family member and have a heavy duty greenhouse with canned non-hybrid seeds. Recent work has indicated that for disasters involving the elimination of conventional agriculture, alternative food conversion is a more practical means of ensuring human food. This would involve converting wood and natural gas into human edible food using a number of different mechanisms. Alternative foods are inexpensive pre-catastrophe but must be scaled up post-catastrophe. A research agenda for analysis of specific food supply resilience decisions has been proposed as food supply resilience requires not just the food itself, but also the accompanying systems of food production and distribution.