The C.E.O. of another large tech company told me, “It’s still not at the point where industry insiders would turn to each other with a straight face and ask what their plans are for some apocalyptic event.” He went on, “But, having said that, I actually think it’s logically rational and appropriately conservative.” He noted the vulnerabilities exposed by the Russian cyberattack on the Democratic National Committee, and also by a large-scale hack on October 21st, which disrupted the Internet in North America and Western Europe. “Our food supply is dependent on G.P.S., logistics, and weather forecasting,” he said, “and those systems are generally dependent on the Internet, and the Internet is dependent on D.N.S.”—the system that manages domain names. “Go risk factor by risk factor by risk factor, acknowledging that there are many you don’t even know about, and you ask, ‘What’s the chance of this breaking in the next decade?’ Or invert it: ‘What’s the chance that nothing breaks in fifty years?’ ”

Others featured on Doomsday Preppers are more out there — literally. Robert and Debbie Earl, retired Florida chicken farmers, worry about the seas rising. So they are building a home constructed of old tires and sand-filled bottles near Alpine, Texas. Robert Earl describes himself as "Mad Max meets Rube Goldberg with a little bit of Al Gore thrown in."
Although there is a general public policy debate over whether the world's supply of oil reserves has peaked and the need for alternative fuels, this group believes that peak oil is a near term threat to Western civilization,[42] and take appropriate measures,[43] usually involving relocation to an agriculturally self-sufficient survival retreat.[44]

You don’t need a huge space to store emergency supplies if you plan wisely. Use every inch of your storage space for efficiency and necessity. When buying emergency supplies, look for stackable items with minimal packaging or that serve multiple purposes (multi-function items are great because you get the benefits of multiple tools without using up all that storage space). For example, MREs don’t take as much space as individual ingredients. Buying freeze-dried food instead of ready-to-eat foods lets you store even more in a smaller area.

Let’s get all the sophomoric jokes out of the way. In this context, the “pocket rocket” moniker refers to an ultralight camp stove that is perfect for backcountry hunters, long-distance hikers, bug-out preppers, and anyone else who may need to cook a hot meal quickly while off the grid. The Pocket Rocket 2 is half the weight of the first version, and it can boil a quart of water in only three and a half minutes. Of course, you’ll need a fuel canister to provide the heat (isobutane-propane fuel canisters are designed to fit this stove, and they offer great temperature and altitude tolerance). Once the self-sealing fuel canister is screwed into place, using the stove is a breeze. The serrated pot-supports can hold a variety of pots and pans. The adjustable flame can go low to simmer food, high for a fast boil, or anywhere in between. You can even use it like a blowtorch to start a stubborn campfire. The stove also comes with a lightweight case for protection, and it easily packs down to store in your cookpot (or your pocket).
GPS is great but what happens when your battery dies, and you don’t have a portable battery handy? The compass is the one piece of survival gear that will never let you down. Sure, it can’t tell you if there’s a town nearby but it can prevent you from wandering aimlessly in circles. The Eyesky compass is designed specifically to help extricate you from emergency situations. It features conversion charts to measure distances, a rotating bezel ring to determine your heading and adjustable sight lines to plot your course. It’s also built to last. It will take you all of an afternoon to learn how to use the Eyesky compass and it may turn out to be the most valuable afternoon you ever spent.

Young’s observations rang true: Though the Wise Company meals would keep me alive in the event of an emergency, they were simply a lot more carbheavy, with a lot less animal protein and a lot fewer vegetables, than what I eat on a typical day (many of the Wise meals I bought substituted small globules of vegetable protein for actual meat). For the next two days, I supplemented my diet with freeze-dried vegetables, fruit, and yogurt I’d bought from another company, called Thrive Life, and felt the low-bloodsugar sensation dissipate. (Wise Company also sells individual ingredients, in addition to full meals, but I thought I’d diversify my sources.)
According to Hobel, shelter is your first priority. Lay down cardboard and other materials to insulate yourself from the ground. (Even in summer, the ground can have temperatures that lead to hypothermic conditions.) Use tarps, blankets, pillows—whatever you can find—to build the shelter on that layer. It should be as low to the ground as possible, and you shouldn’t be able to sit up when you’re inside, Hobel says. Other than the airflow you need to breathe, block all openings to keep cold air from coming in. It’s a matter of conserving heat. A lot of people don’t realize that their bodies are heat sources, Hobel says. You’re almost 100 degrees. Trap that heat around you instead of letting it rise in a tall shelter, and you won’t need a fire to stay warm.