Free · Science-checked · Home & wilderness
Know what actually keeps you alive.
Wilderness survival, 30-day blackouts, hurricanes and off-grid living — with multiple methods for every task and an honest rating on each one.
Start here · Home track
Hurricane & blackout ready
Most emergencies happen at home with no power. Calculate supplies, build your family plan and pack your kits.
The curriculum
34 survival disciplines
01
Water & Purification
Collect, clarify, filter and disinfect water 15+ ways.
02
Fire Making
12+ ignition methods, tinder, fire lays and safe extinguishing.
03
Shelter Building
Tarp, debris, lean-to, snow and vehicle shelters.
04
Electricity & Lighting
Real power vs. science experiments — with honest watt figures.
05
Food & Cooking
Fireless cooking, camp stoves, safe food handling.
06
Food Preservation
Evaporative cooling, drying, smoking and safe storage.
07
Sanitation & Toilets
Waste separation, latrines, keeping water sources clean.
08
Bathing & Hygiene
Gravity showers, handwashing stations, off-grid laundry.
Every lesson answers
Seven questions. No YouTube tricks.
Each technique is labeled so you know how far to trust it.
- 1What am I trying to accomplish?
- 2What materials do I need?
- 3What can I substitute?
- 4How do I do it, step by step?
- 5What's the science?
- 6What are the dangers?
- 7How do I know it worked?
Start here
Featured lessons
Disinfecting Water by Boiling
The most reliable way to kill disease-causing organisms without chemicals or filters.
Beginner · 15 min
Field-TestedDisinfecting Water with Household Bleach
Measured, unscented bleach can disinfect clear water when boiling isn't possible.
Beginner · 35 min
Field-TestedSODIS: Solar Water Disinfection
WHO-recognized: clear PET bottles in direct sun use UV and heat to reduce pathogens. Water must be clear first.
Beginner · 6–48 hours
Field-TestedLighting Fire with a Ferro Rod
Hot sparks (~3,000 °C) that work wet, windy and at altitude.
Beginner · 10 min
ConditionalThe Bow Drill
Friction fire from natural materials — demanding but learnable.
Advanced · 1–3 hours to build
ConditionalWater-Filled Bottle Lens
Works only in strong direct sun with a well-rounded bottle or bag. Learn why it often fails.
Intermediate · Variable
Myth buster
"Drink your urine to survive."
Urine contains salts and waste that get more concentrated as you dehydrate. It worsens dehydration.
Read all survival myths →