Questions relating to staying alive in the wilderness and learning survival techniques. Please **do not** use this tag for questions about general survival that are not related to the outdoors. Surviving in town or city environments will likely be closed.

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How dangerous are Polar Routes, if an aircraft must land on water or wild land?

Suppose an emergency landing necessary for a commercial aircraft on a Polar Route on water or in the unoccupied, secluded Arctic outback (e.g. Siberia, Far Northern Canada). What is the time ...
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Is there a portable fluoride water filter?

Is there a portable water filter product (for backpacking), like the following two... MSR AutoFlow Gravity Filter by MSR, which seems to filter relatively large volumes of water (~4 Liters) quickly (...