For global catastrophic risks the costs of food storage become impractical for most of the population  and for some such catastrophes conventional agriculture would not function due to the loss of a large fraction of sunlight (e.g. during nuclear winter or a supervolcano). In such situations, alternative food is necessary, which is converting natural gas and wood fiber to human edible food.
Even the smartest smartphone hasn’t been able to compensate for having no signal; until now. goTenna leverages a simple messaging app to allow you to communicate with the outside world should you be in need of help. You can share your GPS coordinates and condition, access offline maps or broadcast your situation to any other goTenna user in the vicinity. You also get confirmation your messages were delivered successfully so you can rest assured help is on the way. Finally, a way to get more from your phone when you’re off-grid. A smart, affordable piece of survival gear.
This group consists of people who live in tornado, hurricane, flood, wildfire, earthquake or heavy snowfall-prone 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.
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In this review guide we’re going to shine a light on 21 essential pieces of survival gear everyone should seriously consider having in their survival pack. We’re going to concentrate on survival gear aimed at aiding those engaged in outdoor activities and not those forced from their home by natural disaster, although some of these products will also be useful in those types of situations. We’ll start by highlighting 3 pieces of must-have survival gear; those things we would not venture into the wilderness without, and then move on to other valuable survival aids you’ll want to think about packing.