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Six emergency shelters buildable from available materials: debris hut, lean-to, A-frame tarp, snow cave, ramada, and natural windbreak. Includes insulation R-value equivalents, core temperature retention data, construction time estimates, and when each design outperforms the others.
Step-by-step debris hut construction for one person using only materials found in a temperate forest. Covers ridge pole selection, ribbing geometry, lattice construction, debris depth (2-foot minimum), interior bedding, and core temperature retention. Includes common failure points.
Building a sustainable fire in adverse conditions requires site selection, moisture barriers, resin-rich wood identification, and fire lay geometry. Covers log cabin vs teepee in wind, feather sticks, and the common failures that kill a fire before it catches.
Complete bow drill fire starting guide: wood selection, moisture testing, spindle and hearth preparation, notch geometry, friction technique, and coal transfer to tinder bundle. Covers the most common failure points and effective wood pairings for North American species.
Ranking of seven fire starting methods by reliability in rain at 40°F: WetFire cubes, ferro rod, stormproof matches, Vaseline cotton balls, fatwood, disposable lighter, and standard matches. Includes failure modes and recommended loadout.
Solar Water Disinfection (SODIS) uses UV-A radiation to purify water in clear PET bottles. WHO-validated method: 6 hours in direct sun above UV Index 2, or 2 full days on overcast days. Covers bottle selection, turbidity limits, and reflective surface optimization.
Nine fire starting methods ranked by reliability in adverse conditions: ferro rod, stormproof matches, lighter, fire piston, fatwood, bow drill, flint and steel, WetFire tinder, and fire paste. Includes spark temperatures, tinder ignition thresholds, and the conditions that make each method fail.
Exact dosages, contact times, and pathogen coverage for the three main chemical water treatment options: iodine tablets, household bleach, and chlorine dioxide. Includes cold-water and turbid-water adjustments and a head-to-head comparison.
Head-to-head comparison of the Sawyer Squeeze, Big Berkey, and Lifestraw on micron rating, flow rate, weight, freeze damage risk, and virus coverage. Clear winner for each use case: bug-out bag, base camp, and long-term home storage.
Heat wave preparedness: heat stroke versus heat exhaustion recognition and treatment, cooling center location strategy, vulnerable population risk factors, the wet bulb globe temperature as a better heat risk measure than air temperature alone, vehicle heat safety, and home cooling without air conditioning.
