When bands of marauders start roaming the streets, how are you going to keep them out? Tear down a few walls, says Timothy Ferraro, a twenty-five-year construction veteran who's thought about this situation plenty while watching The Walking Dead. "Assuming the attackers don't have a battering ram, you should be able to keep them out using the lumber and drywall already in your home," he says.
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.
“One misconception about prepping is that you’re always thinking there’s going to be some kind of epic disaster,” she told me over the phone from Virginia. “The most common disaster that we prep for, or that happens to us, is a financial problem.” A longtime single mother, Luther said her interest in food storage grew out of a period of “abject poverty” following the 2008 recession. Lisa Bedford, a Texas-based writer who runs the site The Survival Mom, told me she got into disaster preparedness around the same time, when she wasn’t sure if her husband’s construction business would survive the downturn. (Bedford also works as an independent consultant for Thrive Life, meaning that she promotes their products online, and receives a commission on purchases from customers she refers to the company, as well as a discount on products she buys herself.)
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