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.

Johnson wishes that the wealthy would adopt a greater “spirit of stewardship,” an openness to policy change that could include, for instance, a more aggressive tax on inheritance. “Twenty-five hedge-fund managers make more money than all of the kindergarten teachers in America combined,” he said. “Being one of those twenty-five doesn’t feel good. I think they’ve developed a heightened sensitivity.” The gap is widening further. In December, the National Bureau of Economic Research published a new analysis, by the economists Thomas Piketty, Emmanuel Saez, and Gabriel Zucman, which found that half of American adults have been “completely shut off from economic growth since the 1970s.” Approximately a hundred and seventeen million people earn, on average, the same income that they did in 1980, while the typical income for the top one per cent has nearly tripled. That gap is comparable to the gap between average incomes in the U.S. and the Democratic Republic of Congo, the authors wrote.

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