Strategic reserve
A strategic reserve is the reserve of a commodity or items that is held back from normal use by governments, organisations, or businesses in pursuance of a particular strategy or to cope with unexpected events.
A document issued by the US Department of Defense in 2005 defines a strategic reserve as follows: "An external reinforcing force which is not committed in advance to a specific Major Subordinate Command, but which can be deployed to any region for a mission decided at the time by the Major NATO Commander."
There are several national and international projects aiming to preserve the existing natural wealth and diversity in case of mass extinction or a global catastrophe. The Svalbard Global Seed Vault facility, opened in 2008, focuses on collecting duplicate samples of plant seeds from all around the world and currently contains close to 1 million different agricultural seed samples. The final storage capacity is said to be 4.5 million seed samples. Another such institution, Frozen Ark, concentrates on DNA preservation of endangered animal species for generations.